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Ff139 unship (before/after)scriptexecute in nightly #39391

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Merged
hamishwillee merged 3 commits into from
May 9, 2025
Merged

Ff139 unship (before/after)scriptexecute in nightly #39391

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a0aa30f
FF139 Relnote/Exp - unship (before/after)scriptexecute events
hamishwillee May 5, 2025
8d144a4
Merge branch 'firefox/139' into ff139_unship_scriptexecute
bsmth May 6, 2025
5d5d70c
Update files/en-us/mozilla/firefox/releases/139/index.md
hamishwillee May 9, 2025
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3 changes: 3 additions & 0 deletions files/en-us/mozilla/firefox/releases/139/index.md
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Expand Up @@ -79,6 +79,9 @@ These features are newly shipped in Firefox 139 but are disabled by default. To
- **Support for escaping `<` and `>` in attributes when serializing HTML**: `dom.security.html_serialization_escape_lt_gt`.
Firefox now replaces the `<` and `>` characters with `&lt;` and `&gt;`, respectively, in attributes when serializing HTML. This helps prevent certain exploits where HTML is serialized and then injected back into the DOM.
The affected methods and properties are: {{domxref("Element.innerHTML")}}, {{domxref("Element.outerHTML")}}, {{domxref("Element.getHTML()")}}, {{domxref("ShadowRoot.innerHTML")}}, and {{domxref("ShadowRoot.getHTML()")}}. ([Firefox bug 1941347](https://bugzil.la/1941347)).
- **Disable non-standard `beforescriptexecute` and `afterscriptexecute`**: `dom.events.script_execute.enabled`.
The events have been disabled on Nightly only, allowing browser testing prior to their removal.
The affected events are: [`beforescriptexecute`](/en-US/docs/Web/API/Document/beforescriptexecute_event) and [`afterscriptexecute`](/en-US/docs/Web/API/Document/afterscriptexecute_event) on the {{domxref("Document")}} interface, and [`afterscriptexecute`](/en-US/docs/Web/API/Element/afterscriptexecute_event) and [`beforescriptexecute`](/en-US/docs/Web/API/Element/beforescriptexecute_event) on the {{domxref("Element")}} interface. ([Firefox bug 1954685](https://bugzil.la/1954685)).

## Older versions

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