Bug 2566440 (CVE-2026-121242) - CVE-2026-121242 chromium-browser: Improper input validation in WebPackaging
Summary: CVE-2026-121242 chromium-browser: Improper input validation in WebPackaging
Keywords:
Status: NEW
Alias: CVE-2026-121242
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2567123 2567143
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-03 21:15 UTC by OSIDB Bzimport
Modified: 2026-11-04 17:51 UTC (History)
0 users

Fixed In Version:
Clone Of:
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Last Closed:
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Description OSIDB Bzimport 2026-11-03 21:15:28 UTC 
Improper input validation in WebPackaging in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to bypass web origin policy via crafted network traffic. (Chromium security severity: Medium)
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