{"id":"CVE-2026-79251","title":"chromium-browser: Google Chrome: Web origin policy bypass via improper input validation (CVE-2026-79251)","summary":"A flaw was found in Google Chrome. Improper input validation in the Network component allows a remote attacker to potentially bypass the web origin policy. This can be achieved by enticing a user to visit a specially crafted HTML page. The…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","cvssSource":"vendor","cwe":["CWE-20"],"vendor":"Red Hat","product":"Chrome","affected":["Chrome >= 152.0.7977.65 < 152.0.7977.65"],"published":"2026-08-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T04:49:47+00:00","source":"CSAF","sourceUrl":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-79251.json","references":[{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-79251.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-79251"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-79251"},{"url":"https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html"},{"url":"https://issues.chromium.org/issues/513392351"}],"tags":["csaf","vex","red-hat","cve.org","score-dispute"],"epss":0.00265,"epssPercentile":0.18365,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-08-27T19:38:56.322477Z"},"scores":{"vendor":6.5,"adp":4.3},"ingestedAt":"2026-09-17T23:31:20.806Z","slug":"CVE-2026-79251","body":"## Overview\n\nA flaw was found in Google Chrome. Improper input validation in the Network component allows a remote attacker to potentially bypass the web origin policy. This can be achieved by enticing a user to visit a specially crafted HTML page. The web origin policy is a critical security mechanism that prevents malicious websites from interacting with content from other domains.\n\n## Vendor advisories\n\n- **Red Hat VEX** · updated 2026-09-25 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-79251.json)\n\n**chromium-browser: Google Chrome: Web origin policy bypass via improper input validation**. Released 2026-08-25, updated 2026-09-25.\n\nNot affected:\n\n- All currently supported Red Hat products\n\n## Remediation\n\nRefer to the advisory for fix availability.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":210658,"id":"CVE-2026-79251","ts":1790322144435,"field":"cvss","old":"4.3","new":"6.5"}]}