2.8.2

• Fixed crash while suggesting providers if they have no description (#12152)
• Fixed issues creating lock files violating the schema in some circumstances (#12149)
• Fixed create-project regression in 2.8.1 when using path repos with relative paths (#12150)
• Fixed ctrl-C aborts not working inside text prompts (#12106)
• Fixed git failing silently when git cannot read a repo due to ownership violations (#12178)
• Fixed handling of signals in non-PHP binaries run via proxies (#12176)

Full Changelog: 2.8.1...2.8.2

2.8.1

• Fixed init command regression when no license is provided (#12145)
• Fixed --strict-ambiguous flag handling whereas it sometimes did not report all issues (#12148)
• Fixed create-project to inherit the target folder's permissions for installed project files (#12146)
• Fixed a few cases where the prompt for using a parent dir's composer.json fails to work correctly (#8023)

Full Changelog: 2.8.0...2.8.1

2.8.0

• BC Warning: Fixed https_proxy env var falling back to http_proxy's value. The fallback and warning have now been removed per the 2.7.3 release notes (#11938, #11915)
• Added --patch-only flag to the update command to restrict updates to patch versions and make an update of all deps safer (#12122)
• Added --abandoned flag to the audit command to configure how abandoned packages should be treated, overriding the audit.abandoned config setting (#12091)
• Added --ignore-severity flag to the audit command to ignore one or more advisory severities (#12132)
• Added --bump-after-update flag to the update command to run bump after the update is done (#11942)
• Added a way to control which scripts receive additional CLI arguments and where they appear in the command, see the docs (#12086)
• Added allow-missing-requirements config setting to skip the error when the lock file is not fulfilling the composer.json's dependencies (#11966)
• Added a JSON schema for the composer.lock file (#12123)
• Added better support for Bitbucket app passwords when cloning repos / installing from source (#12103)
• Added --type flag to filter packages by type(s) in the reinstall command (#12114)
• Added --strict-ambiguous flag to the dump-autoload command to make it return with an error code if duplicate classes are found (#12119)
• Added warning in dump-autoload when vendor files have been deleted (#12139)
• Added warnings for each missing platform package when running create-project to avoid having to run it again and again (#12120)
• Added sorting of packages in allow-plugins when sort-packages is enabled (#11348)
• Added suggestion of provider packages / polyfills when an ext or lib package is missing (#12113)
• Improved interactive package update selection by first outputting all packages and their possible updates (#11990)
• Improved dependency resolution failure output by sorting the output in a deterministic and (often) more logical way (#12111)
• Fixed PHP 8.4 deprecation warnings about E_STRICT (#12116)
• Fixed init command to validate the given license identifier (#12115)
• Fixed version guessing to be more deterministic on feature branches if it appears that it could come from either of two mainline branches (#12129)
• Fixed COMPOSER_ROOT_VERSION env var handling to treat 1.2 the same as 1.2.x-dev and not 1.2.0 (#12109)
• Fixed require command skipping new stability flags from the lock file, causing invalid lock file diffs (#12112)
• Fixed php://stdin potentially being open several times when running Composer programmatically (#12107)
• Fixed handling of platform packages in why-not command and partial updates (#12110)
• Reverted "Fixed transport-options.ssl for local cert authorization being stored in lock file making them less portable (#12019)" from 2.7.8 as it was broken

Full Changelog: 2.7.9...2.8.0

2.7.9

• Fixed Docker detection breaking on constrained environments (#12095)
• Fixed upstream issue in bash completion script, it is recommended to update it using the completion command (#12015)

Full Changelog: 2.7.8...2.7.9

2.7.8

• Added release-age, release-date and latest-release-date in the JSON output of outdated (#12053)
• Fixed PHP 8.4 deprecation warnings
• Fixed addressability of branches containing # signs (#12042)
• Fixed bump command not handling some ~ constraints correctly (#12038)
• Fixed COMPOSER_AUTH not taking precedence over ./auth.json (#12084)
• Fixed relative: true sometimes not being respected in path repo symlinks (#12092)
• Fixed copy from cache sometimes failing on VirtualBox shared folders (#12057)
• Fixed PSR-4 autoloading order regression in some edge case (#12063)
• Fixed duplicate lib-* packages causing issues when having pecl + core versions of the same PHP extension (#12093)
• Fixed transport-options.ssl for local cert authorization being stored in lock file making them less portable (#12019)
• Fixed memory issues when installing large binaries (#12032)
• Fixed archive command crashing when a path cannot be realpath'd on windows (#11544)
• API: Deprecated BasePackage::$stabilities in favor of BasePackage::STABILITIES (685add7)
• Improved Docker detection (#12062)

Full Changelog: 2.7.7...2.7.8

2.7.7

This release includes fixes for issues found in a security audit by Cure53 funded by Alpha-Omega.

• Security: Fixed command injection via malicious git branch name (GHSA-47f6-5gq3-vx9c / CVE-2024-35241)
• Security: Fixed multiple command injections via malicious git/hg branch names (GHSA-v9qv-c7wm-wgmf / CVE-2024-35242)
• Security: Fixed secure-http checks that could be bypassed by using malformed URL formats (fa3b958)
• Security: Fixed Filesystem::isLocalPath including windows-specific checks on linux (3c37a67)
• Security: Fixed perforce argument escaping (3773f77)
• Security: Fixed handling of zip bombs when extracting archives (de5f7e3)
• Security: Fixed Windows command parameter escaping to prevent abuse of unicode characters with best fit encoding conversion, reported by Splitline Huang (3130a74, 04a63b3)
• Fixed PSR violations for classes not matching the namespace of a rule being hidden, this may lead to new violations being shown (#11957)
• Fixed UX when a plugin is still in vendor dir but is not required nor allowed anymore after changing branches (#12000)
• Fixed new platform requirements from composer.json not being checked if the lock file is outdated (#12001)
• Fixed ability for config command to remove autoload keys (#11967)
• Fixed empty type support in init command (#11999)
• Fixed git clone errors when safe.bareRepository is set to strict in the git config (#11969)
• Fixed regression showing network errors on PHP <8.1 (#11974)
• Fixed some color bleed from a few warnings (#11972)

Full Changelog: 2.7.6...2.7.7

2.2.24

This release includes fixes for issues found in a security audit by Cure53 funded by Alpha-Omega.

• Security: Fixed command injection via malicious git branch name (GHSA-47f6-5gq3-vx9c / CVE-2024-35241)
• Security: Fixed multiple command injections via malicious git/hg branch names (GHSA-v9qv-c7wm-wgmf / CVE-2024-35242)
• Security: Fixed secure-http checks that could be bypassed by using malformed URL formats (fa3b958)
• Security: Fixed Filesystem::isLocalPath including windows-specific checks on linux (3c37a67)
• Security: Fixed perforce argument escaping (3773f77)
• Security: Fixed handling of zip bombs when extracting archives (de5f7e3)
• Security: Fixed Windows command parameter escaping to prevent abuse of unicode characters with best fit encoding conversion (3130a74, 04a63b3)

2.7.6

• Fixed regression when script handlers add an autoloader which uses a private callback (#11960)

2.7.5

• Added uninstall alias to remove command (#11951)
• Added workaround for broken curl versions 8.7.0/8.7.1 causing transport exceptions (#11913)
• Fixed root usage warnings showing up within Podman containers (#11946)
• Fixed config command not handling objects correctly in some conditions (#11945)
• Fixed binary proxies not containing the correct path if the project dir is a symlink (#11947)
• Fixed Composer autoloader being overruled by project autoloaders when they are loaded by event handlers (scripts/plugins) (#11955)
• Fixed TransportException (http failures) not having a distinct exit code, should now exit with 100 as code (#11954)

2.7.4

• Fixed regression (Call to undefined method ProxyManager::needsTransitionWarning()) with projects requiring composer/composer in an pre-2.7.3 version (#11943, #11940)

As a side-note, requiring composer/composer is frowned upon and should really only be done in circumstances where it is absolutely necessary, and ideally you should talk to us first to see if we can't help avoid it or help by extracting some code in a smaller library.