ProseMirror has a XSS vulnerability in prosemirror-view's paste handling

[ Description ]Official description

ProseMirror's view component renders and manages the editable browser interface for ProseMirror documents. Prior to 1.42.3, prosemirror-view paste handling accepts attacker-provided HTML whose clipboard slice context contains attributes that are not passed through schema attribute validation. When a user pastes the crafted HTML into an editor, the unvalidated context attributes can construct content that executes attacker-controlled JavaScript in the browser window containing the editor. This issue is fixed in version 1.42.3.

[ Fixes ]Fixes and patches

• prosemirror-view 1.42.3Fixed version · GitHub Advisories · npm package prosemirror-view: upgrade to 1.42.3 or later (affected < 1.42.3)

[ Packages ]Affected open-source packages

• prosemirror-view npmAffected < 1.42.3 · fixed in 1.42.3 · GHSA-c8x8-7fp4-3x9w

[ References ]References

• github.com/ProseMirror/prosemirror-view/commit/20dc0a911a79f8fc6640dbbea5e7d68d3c4784b7
• github.com/ProseMirror/prosemirror-view/commit/2e91a612bbc1248e55b4f6061fc93fe459f977c1
• github.com/ProseMirror/prosemirror-view/security/advisories/GHSA-c8x8-7fp4-3x9w