CVE-2026-121138

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{"bugzilla": {"description": "chromium-browser: Observable discrepancy in CORS", "id": "2566471", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2566471"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-203", "details": ["An observable discrepancy flaw was found in the CORS component of the Chromium browser.\nUpstream bug(s):\nhttps://issues.chromium.org/issues/553249728"], "name": "CVE-2026-121138", "public_date": "2026-11-03T20:42:56Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-121138\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-121138\nhttps://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop.html\nhttps://issues.chromium.org/issues/553249728"], "statement": "Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.", "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[157.0.8103.38,157.0.8103.38)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Chrome", "source": "cna", "vendor": "Google"}, "product": "chrome", "vendor": "google"}], "created": "2026-11-03T22:15:02.952937+00:00", "updated": "2026-11-04T23:15:16.397227+00:00", "vendors": ["google", "google$PRODUCT$chrome"]}