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May 6, 2026
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merge release to master#1314
adamhathcock merged 22 commits into
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Copilot AI review requested due to automatic review settings May 6, 2026 09:10
…to-master

# Conflicts:
#	src/SharpCompress/Common/ExtractionMethods.Async.cs
#	src/SharpCompress/Common/ExtractionMethods.cs
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Pull request overview

This PR merges release changes into master, focusing on tightening extraction path traversal protections (Zip Slip) and improving async behavior in the RAR unpackers, with new/expanded tests to prevent regressions.

Changes:

  • Refactors extraction helpers to centralize destination-path normalization and “stay within destination directory” enforcement.
  • Updates RAR (V1 + V2017) async unpack paths to use async buffer/table operations and adds new async-read correctness tests.
  • Adds new security tests covering directory/file traversal attempts across multiple extraction APIs.

Reviewed changes

Copilot reviewed 34 out of 34 changed files in this pull request and generated 3 comments.

Show a summary per file
File Description
tests/SharpCompress.Test/Security/ZipSlip.cs Adds a Zip Slip regression test using malicious ZIP directory entries.
tests/SharpCompress.Test/Security/ExtractionPathTraversalTests.cs Adds theory-based traversal tests across Reader/Archive sync+async APIs.
tests/SharpCompress.Test/Rar/RarReaderAsyncTests.cs Adds test ensuring async RAR reader doesn’t use sync stream operations.
tests/SharpCompress.Test/Rar/RarArchiveTests.cs Adds sync coverage for recently changed RAR unpackers.
tests/SharpCompress.Test/Rar/RarArchiveAsyncTests.cs Adds async coverage for recently changed RAR unpackers.
tests/SharpCompress.Test/packages.lock.json Updates locked dependencies/RID-specific sections for the test project.
tests/SharpCompress.Test/Mocks/AsyncOnlyStream.cs Refactors wrapper to a primary-constructor form (used by async I/O tests).
src/SharpCompress/Utility.cs Introduces Utility.PathComparison for OS-appropriate path comparisons.
src/SharpCompress/Readers/IReaderExtensions.cs Routes reader extraction through the new entry-based extraction helpers.
src/SharpCompress/Readers/IAsyncReaderExtensions.cs Routes async reader extraction through new entry-based async helpers; adjusts file-open callback usage.
src/SharpCompress/IO/AsyncBinaryReader.cs Minor expression-bodied refactor for async read/skip helpers.
src/SharpCompress/Compressors/Rar/UnpackV2017/Unpack.unpack20_async.cs Converts final table/buffer operations to async equivalents and adds async last-table read helper.
src/SharpCompress/Compressors/Rar/UnpackV2017/Unpack.unpack15_async.cs Updates buffer flush calls to async.
src/SharpCompress/Compressors/Rar/UnpackV2017/Unpack.cs Replaces Char property with ReadChar() and adds ReadCharAsync(...).
src/SharpCompress/Compressors/Rar/UnpackV1/Unpack50.Async.cs Switches table/filter/buffer operations to async equivalents.
src/SharpCompress/Compressors/Rar/UnpackV1/Unpack20.Async.cs Converts last-table read and buffer write to async equivalents.
src/SharpCompress/Compressors/Rar/UnpackV1/Unpack15.Async.cs Updates buffer flush calls to async.
src/SharpCompress/Compressors/Rar/UnpackV1/Unpack.cs Replaces Char property with ReadChar().
src/SharpCompress/Compressors/Rar/UnpackV1/Unpack.Async.cs Adds async implementations for tables/end-of-block/VM code paths and PPM interactions.
src/SharpCompress/Compressors/Rar/IRarUnpack.cs Updates interface to expose ReadChar() + ReadCharAsync(...) instead of Char.
src/SharpCompress/Compressors/PPMd/H/RangeCoder.cs Adds async initialization and moves to ReadChar/ReadCharAsync model.
src/SharpCompress/Compressors/PPMd/H/ModelPPM.cs Adds DecodeInitAsync(...) and updates sync init to use ReadChar().
src/SharpCompress/Common/Rar/AsyncMarkingBinaryReader.cs Wraps incomplete-read failures with clearer InvalidFormatException message.
src/SharpCompress/Common/IEntryExtensions.cs Adds entry-based sync extraction helpers with centralized destination-path checks.
src/SharpCompress/Common/IEntryExtensions.Async.cs Adds entry-based async extraction helpers matching sync behavior/validation.
src/SharpCompress/Common/DirectoryManagement.cs New helper for destination directory normalization + traversal enforcement.
src/SharpCompress/Archives/IAsyncArchiveExtensions.cs Uses new entry extraction core to handle dirs/files consistently and enforce traversal checks.
src/SharpCompress/Archives/IArchiveExtensions.cs Same as async: uses new entry extraction core for consistent validation.
src/SharpCompress/Archives/IArchiveEntryExtensions.cs Re-routes archive-entry extraction APIs through new entry-based helpers.
src/SharpCompress/Common/ExtractionMethods.cs Removed; functionality moved into IEntryExtensions + DirectoryManagement.
src/SharpCompress/Common/ExtractionMethods.Async.cs Removed; functionality moved into IEntryExtensions.Async + DirectoryManagement.

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Comment thread src/SharpCompress/Common/IEntryExtensions.cs
Comment thread tests/SharpCompress.Test/Security/ZipSlip.cs
Comment thread tests/SharpCompress.Test/Mocks/AsyncOnlyStream.cs
@adamhathcock adamhathcock enabled auto-merge May 6, 2026 09:20
@adamhathcock adamhathcock merged commit 1e6da68 into master May 6, 2026
7 checks passed
@adamhathcock adamhathcock deleted the adam/merge-release-to-master branch May 6, 2026 09:23
tonycknight pushed a commit to tonycknight/microbroker that referenced this pull request May 31, 2026
Updated [SharpCompress](https://github.com/adamhathcock/sharpcompress)
from 0.48.1 to 0.49.0.

<details>
<summary>Release notes</summary>

_Sourced from [SharpCompress's
releases](https://github.com/adamhathcock/sharpcompress/releases)._

## 0.49.0

This should contain a lot of write async fixes and some breaking API
changes that fix previous broke `net48` usage

## What's Changed
* Rename IWriteableArchiveFactory.cs to IWritableArchiveFactory.cs by
@​Copilot in adamhathcock/sharpcompress#1244
* Some API clean up from GPT 5.4 by @​adamhathcock in
adamhathcock/sharpcompress#1243
* Release to master by @​adamhathcock in
adamhathcock/sharpcompress#1267
* Fix three BLAKE2sp correctness bugs and eliminate allocations in hot
path by @​coderb in
adamhathcock/sharpcompress#1266
* Corrected async examples. by @​dlemstra in
adamhathcock/sharpcompress#1277
* Fix setting invalid access time fails extraction by @​aromaa in
adamhathcock/sharpcompress#1279
* Fix incorrect code examples in docs for sync/async usage by @​Copilot
in adamhathcock/sharpcompress#1280
* Replace APPNOTE.TXT contents with reference link note by @​puk06 in
adamhathcock/sharpcompress#1286
* Release to Master by @​adamhathcock in
adamhathcock/sharpcompress#1274
* update docs for tar gap analysis and XZ usage by @​adamhathcock in
adamhathcock/sharpcompress#1288
* Add a PooledMemoryStream to avoid allocating by @​adamhathcock in
adamhathcock/sharpcompress#1275
* fix: Change LeaveStreamOpen default from true to false by @​puk06 in
adamhathcock/sharpcompress#1293
* Fix usage of ReaderOptions and pre-defined values by @​adamhathcock in
adamhathcock/sharpcompress#1295
* Enforce seekable, readable and writable on streams by @​adamhathcock
in adamhathcock/sharpcompress#1297
* Add ArchiveInformation record for consolidated archive detection and
capability inspection by @​Copilot in
adamhathcock/sharpcompress#1299
* merge release to master by @​adamhathcock in
adamhathcock/sharpcompress#1314
* Some clean up and test clean up by @​adamhathcock in
adamhathcock/sharpcompress#1321
* Finish Write Async by @​adamhathcock in
adamhathcock/sharpcompress#1323
* More complete Tar implementation: USTAR, PAX, etc. by @​adamhathcock
in adamhathcock/sharpcompress#1289
* Add Polysharp and adjustments that do not break legacy frameworks by
@​adamhathcock in
adamhathcock/sharpcompress#1330
* Fix null `IVolume.FileName` for single-volume file-based archives by
@​Copilot in adamhathcock/sharpcompress#1333
* Add skills by @​adamhathcock in
adamhathcock/sharpcompress#1332
* add AOT smoke and missing tests by @​adamhathcock in
adamhathcock/sharpcompress#1334

## New Contributors
* @​dlemstra made their first contribution in
adamhathcock/sharpcompress#1277
* @​aromaa made their first contribution in
adamhathcock/sharpcompress#1279
* @​puk06 made their first contribution in
adamhathcock/sharpcompress#1286

**Full Changelog**:
adamhathcock/sharpcompress@0.48.1...0.49.0

## 0.49.0-beta.140

## What's Changed
* Add Polysharp and adjustments that do not break legacy frameworks by
@​adamhathcock in
adamhathcock/sharpcompress#1330


**Full Changelog**:
adamhathcock/sharpcompress@0.49.0-beta.136...0.49.0-beta.140

## 0.49.0-beta.136

## What's Changed
* Rename IWriteableArchiveFactory.cs to IWritableArchiveFactory.cs by
@​Copilot in adamhathcock/sharpcompress#1244
* Some API clean up from GPT 5.4 by @​adamhathcock in
adamhathcock/sharpcompress#1243
* Release to master by @​adamhathcock in
adamhathcock/sharpcompress#1267
* Fix three BLAKE2sp correctness bugs and eliminate allocations in hot
path by @​coderb in
adamhathcock/sharpcompress#1266
* Corrected async examples. by @​dlemstra in
adamhathcock/sharpcompress#1277
* Fix setting invalid access time fails extraction by @​aromaa in
adamhathcock/sharpcompress#1279
* Fix incorrect code examples in docs for sync/async usage by @​Copilot
in adamhathcock/sharpcompress#1280
* Replace APPNOTE.TXT contents with reference link note by @​puk06 in
adamhathcock/sharpcompress#1286
* Release to Master by @​adamhathcock in
adamhathcock/sharpcompress#1274
* update docs for tar gap analysis and XZ usage by @​adamhathcock in
adamhathcock/sharpcompress#1288
* Add a PooledMemoryStream to avoid allocating by @​adamhathcock in
adamhathcock/sharpcompress#1275
* fix: Change LeaveStreamOpen default from true to false by @​puk06 in
adamhathcock/sharpcompress#1293
* Fix usage of ReaderOptions and pre-defined values by @​adamhathcock in
adamhathcock/sharpcompress#1295
* Enforce seekable, readable and writable on streams by @​adamhathcock
in adamhathcock/sharpcompress#1297
* Add ArchiveInformation record for consolidated archive detection and
capability inspection by @​Copilot in
adamhathcock/sharpcompress#1299
* merge release to master by @​adamhathcock in
adamhathcock/sharpcompress#1314
* Some clean up and test clean up by @​adamhathcock in
adamhathcock/sharpcompress#1321
* Finish Write Async by @​adamhathcock in
adamhathcock/sharpcompress#1323
* More complete Tar implementation: USTAR, PAX, etc. by @​adamhathcock
in adamhathcock/sharpcompress#1289

## New Contributors
* @​dlemstra made their first contribution in
adamhathcock/sharpcompress#1277
* @​aromaa made their first contribution in
adamhathcock/sharpcompress#1279
* @​puk06 made their first contribution in
adamhathcock/sharpcompress#1286

**Full Changelog**:
adamhathcock/sharpcompress@0.48.1...0.49.0-beta1

Commits viewable in [compare
view](adamhathcock/sharpcompress@0.48.1...0.49.0).
</details>

[![Dependabot compatibility
score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=SharpCompress&package-manager=nuget&previous-version=0.48.1&new-version=0.49.0)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

Dependabot will resolve any conflicts with this PR as long as you don't
alter it yourself. You can also trigger a rebase manually by commenting
`@dependabot rebase`.

[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

---

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You can trigger Dependabot actions by commenting on this PR:
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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
tonycknight pushed a commit to tonycknight/discorss that referenced this pull request Jun 1, 2026
Updated [SharpCompress](https://github.com/adamhathcock/sharpcompress)
from 0.48.1 to 0.49.1.

<details>
<summary>Release notes</summary>

_Sourced from [SharpCompress's
releases](https://github.com/adamhathcock/sharpcompress/releases)._

## 0.49.1

## What's Changed
* Close writable entry streams during async archive disposal by
@​Copilot in adamhathcock/sharpcompress#1338
* Restore `WriteToDirectoryAsync` progress callbacks for solid 7z
archives by @​Copilot in
adamhathcock/sharpcompress#1340
* Try to fix global.json to avoid churn in locks by @​adamhathcock in
adamhathcock/sharpcompress#1341
* Fix tar archive enumeration after fully reading entry streams by
@​adamhathcock in
adamhathcock/sharpcompress#1342


**Full Changelog**:
adamhathcock/sharpcompress@0.49.0...0.49.1

## 0.49.0

This should contain a lot of write async fixes and some breaking API
changes that fix previous broke `net48` usage

## What's Changed
* Rename IWriteableArchiveFactory.cs to IWritableArchiveFactory.cs by
@​Copilot in adamhathcock/sharpcompress#1244
* Some API clean up from GPT 5.4 by @​adamhathcock in
adamhathcock/sharpcompress#1243
* Release to master by @​adamhathcock in
adamhathcock/sharpcompress#1267
* Fix three BLAKE2sp correctness bugs and eliminate allocations in hot
path by @​coderb in
adamhathcock/sharpcompress#1266
* Corrected async examples. by @​dlemstra in
adamhathcock/sharpcompress#1277
* Fix setting invalid access time fails extraction by @​aromaa in
adamhathcock/sharpcompress#1279
* Fix incorrect code examples in docs for sync/async usage by @​Copilot
in adamhathcock/sharpcompress#1280
* Replace APPNOTE.TXT contents with reference link note by @​puk06 in
adamhathcock/sharpcompress#1286
* Release to Master by @​adamhathcock in
adamhathcock/sharpcompress#1274
* update docs for tar gap analysis and XZ usage by @​adamhathcock in
adamhathcock/sharpcompress#1288
* Add a PooledMemoryStream to avoid allocating by @​adamhathcock in
adamhathcock/sharpcompress#1275
* fix: Change LeaveStreamOpen default from true to false by @​puk06 in
adamhathcock/sharpcompress#1293
* Fix usage of ReaderOptions and pre-defined values by @​adamhathcock in
adamhathcock/sharpcompress#1295
* Enforce seekable, readable and writable on streams by @​adamhathcock
in adamhathcock/sharpcompress#1297
* Add ArchiveInformation record for consolidated archive detection and
capability inspection by @​Copilot in
adamhathcock/sharpcompress#1299
* merge release to master by @​adamhathcock in
adamhathcock/sharpcompress#1314
* Some clean up and test clean up by @​adamhathcock in
adamhathcock/sharpcompress#1321
* Finish Write Async by @​adamhathcock in
adamhathcock/sharpcompress#1323
* More complete Tar implementation: USTAR, PAX, etc. by @​adamhathcock
in adamhathcock/sharpcompress#1289
* Add Polysharp and adjustments that do not break legacy frameworks by
@​adamhathcock in
adamhathcock/sharpcompress#1330
* Fix null `IVolume.FileName` for single-volume file-based archives by
@​Copilot in adamhathcock/sharpcompress#1333
* Add skills by @​adamhathcock in
adamhathcock/sharpcompress#1332
* add AOT smoke and missing tests by @​adamhathcock in
adamhathcock/sharpcompress#1334

## New Contributors
* @​dlemstra made their first contribution in
adamhathcock/sharpcompress#1277
* @​aromaa made their first contribution in
adamhathcock/sharpcompress#1279
* @​puk06 made their first contribution in
adamhathcock/sharpcompress#1286

**Full Changelog**:
adamhathcock/sharpcompress@0.48.1...0.49.0

## 0.49.0-beta.140

## What's Changed
* Add Polysharp and adjustments that do not break legacy frameworks by
@​adamhathcock in
adamhathcock/sharpcompress#1330


**Full Changelog**:
adamhathcock/sharpcompress@0.49.0-beta.136...0.49.0-beta.140

## 0.49.0-beta.136

## What's Changed
* Rename IWriteableArchiveFactory.cs to IWritableArchiveFactory.cs by
@​Copilot in adamhathcock/sharpcompress#1244
* Some API clean up from GPT 5.4 by @​adamhathcock in
adamhathcock/sharpcompress#1243
* Release to master by @​adamhathcock in
adamhathcock/sharpcompress#1267
* Fix three BLAKE2sp correctness bugs and eliminate allocations in hot
path by @​coderb in
adamhathcock/sharpcompress#1266
* Corrected async examples. by @​dlemstra in
adamhathcock/sharpcompress#1277
* Fix setting invalid access time fails extraction by @​aromaa in
adamhathcock/sharpcompress#1279
* Fix incorrect code examples in docs for sync/async usage by @​Copilot
in adamhathcock/sharpcompress#1280
* Replace APPNOTE.TXT contents with reference link note by @​puk06 in
adamhathcock/sharpcompress#1286
* Release to Master by @​adamhathcock in
adamhathcock/sharpcompress#1274
* update docs for tar gap analysis and XZ usage by @​adamhathcock in
adamhathcock/sharpcompress#1288
* Add a PooledMemoryStream to avoid allocating by @​adamhathcock in
adamhathcock/sharpcompress#1275
* fix: Change LeaveStreamOpen default from true to false by @​puk06 in
adamhathcock/sharpcompress#1293
* Fix usage of ReaderOptions and pre-defined values by @​adamhathcock in
adamhathcock/sharpcompress#1295
* Enforce seekable, readable and writable on streams by @​adamhathcock
in adamhathcock/sharpcompress#1297
* Add ArchiveInformation record for consolidated archive detection and
capability inspection by @​Copilot in
adamhathcock/sharpcompress#1299
* merge release to master by @​adamhathcock in
adamhathcock/sharpcompress#1314
* Some clean up and test clean up by @​adamhathcock in
adamhathcock/sharpcompress#1321
* Finish Write Async by @​adamhathcock in
adamhathcock/sharpcompress#1323
* More complete Tar implementation: USTAR, PAX, etc. by @​adamhathcock
in adamhathcock/sharpcompress#1289

## New Contributors
* @​dlemstra made their first contribution in
adamhathcock/sharpcompress#1277
* @​aromaa made their first contribution in
adamhathcock/sharpcompress#1279
* @​puk06 made their first contribution in
adamhathcock/sharpcompress#1286

**Full Changelog**:
adamhathcock/sharpcompress@0.48.1...0.49.0-beta1

Commits viewable in [compare
view](adamhathcock/sharpcompress@0.48.1...0.49.1).
</details>

[![Dependabot compatibility
score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=SharpCompress&package-manager=nuget&previous-version=0.48.1&new-version=0.49.1)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

Dependabot will resolve any conflicts with this PR as long as you don't
alter it yourself. You can also trigger a rebase manually by commenting
`@dependabot rebase`.

[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

---

<details>
<summary>Dependabot commands and options</summary>
<br />

You can trigger Dependabot actions by commenting on this PR:
- `@dependabot rebase` will rebase this PR
- `@dependabot recreate` will recreate this PR, overwriting any edits
that have been made to it
- `@dependabot show <dependency name> ignore conditions` will show all
of the ignore conditions of the specified dependency
- `@dependabot ignore <dependency name> major version` will close this
group update PR and stop Dependabot creating any more for the specific
dependency's major version (unless you unignore this specific
dependency's major version or upgrade to it yourself)
- `@dependabot ignore <dependency name> minor version` will close this
group update PR and stop Dependabot creating any more for the specific
dependency's minor version (unless you unignore this specific
dependency's minor version or upgrade to it yourself)
- `@dependabot ignore <dependency name>` will close this group update PR
and stop Dependabot creating any more for the specific dependency
(unless you unignore this specific dependency or upgrade to it yourself)
- `@dependabot unignore <dependency name>` will remove all of the ignore
conditions of the specified dependency
- `@dependabot unignore <dependency name> <ignore condition>` will
remove the ignore condition of the specified dependency and ignore
conditions


</details>

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
This was referenced Jun 1, 2026
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