{"affected":[{"product":"Chrome","source":"CNA: Chrome","vendor":"Google","versions":[{"lessThan":"157.0.8103.38","status":"affected","version":"157.0.8103.38","versionType":"custom"}]}],"cveId":"CVE-2026-121242","cwes":["CWE-20"],"description":"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)","epss":{"date":"2026-11-09","percentile":0.0774,"score":0.00181},"exploits":[],"kev":null,"metrics":[{"score":6.5,"severity":"medium","source":"ADP: CISA-ADP","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","version":"3.1"}],"modifiedAt":1794232700360,"publishedAt":1793738558262,"references":[{"source":"CNA: Chrome","tags":[],"url":"https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop.html"},{"source":"CNA: Chrome","tags":[],"url":"https://issues.chromium.org/issues/566857543"},{"source":"chrome-cve-admin@google.com","tags":[],"url":"https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop.html"},{"source":"chrome-cve-admin@google.com","tags":[],"url":"https://issues.chromium.org/issues/566857543"}],"remediation":[],"revision":"d9958a68d67cfd2285346436fb28ca46821c69c552bcc18c1ec62803deaa2783","sources":[{"modifiedAt":1794232700360,"name":"CNA: Chrome","retrievedAt":1794233322620,"url":"https://www.cve.org/CVERecord?id=CVE-2026-121242"},{"modifiedAt":1793740654667,"name":"NVD","retrievedAt":1793751767224,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121242"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794236984200,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-121242"}],"ssvc":{"assessedAt":1794232684454,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"CVE-2026-121242","updatedAt":1794236984200}