{"id":"CVE-2026-121138","aliases":[],"cve":{"records":[{"id":"CVE-2026-121138","source":"Chrome","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-11-03T09:49:32.026Z","published":"2026-11-03T20:42:56.293Z","modified":"2026-11-04T20:41:15.848Z"}],"publishers":[{"name":"Chrome","role":"CNA","organizationId":"ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28","modified":"2026-11-03T20:42:56.293Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-11-04T20:41:15.848Z"}],"references":[{"url":"https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop.html","tags":[],"source":"Chrome"},{"url":"https://issues.chromium.org/issues/553249728","tags":[],"source":"Chrome"}],"weaknesses":[{"id":"CWE-203","description":"Observable discrepancy","source":"Chrome"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-11-04T20:38:55.798495Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Observable discrepancy in CORS in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to obtain cross-origin data via a crafted HTML page.","titleSource":"Chrome","descriptionSource":"Chrome","description":"Observable discrepancy in CORS in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to obtain cross-origin data via a crafted HTML page. (Chromium security severity: Low)","score":6.5,"severity":"medium","published":"2026-11-03T20:42:56.293Z","modified":"2026-11-04T20:41:15.848Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Google","name":"Chrome","platforms":[],"versions":[{"version":"157.0.8103.38","status":"affected","lessThan":"157.0.8103.38","versionType":"custom"}],"cpes":[],"source":"Chrome","url":"https://www.cve.org/CVERecord?id=CVE-2026-121138"}],"remediation":[],"references":["https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop.html","https://issues.chromium.org/issues/553249728"],"sources":[{"name":"CVE","id":"CVE-2026-121138","modified":"2026-11-04T20:41:15.848Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-121138"}],"assessments":[{"source":"CISA-ADP","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","score":6.5}],"sourceAffected":[],"observedAt":"2026-11-04T20:57:13.863Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T03:25:32.551Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-04T21:15:34.567Z","attemptedAt":"2026-11-04T21:15:34.567Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-04T21:15:34.589Z","attemptedAt":"2026-11-04T21:15:34.589Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-04T21:15:34.888Z","attemptedAt":"2026-11-04T21:15:34.888Z"},{"source":"EPSS","status":"available","checkedAt":"2026-11-04T21:15:34.499Z","attemptedAt":"2026-11-04T21:15:34.499Z"}],"evidence":[{"source":"FIRST EPSS","id":"CVE-2026-121138","url":"https://www.first.org/epss/","probability":0.00185,"percentile":0.08181,"date":"2026-11-04","checkedAt":"2026-11-04T21:15:34.499Z"},{"source":"NVD","id":"CVE-2026-121138","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121138","modified":"2026-11-03T21:17:22.573","checkedAt":"2026-11-04T21:15:34.567Z"},{"source":"GitHub Advisory Database","id":"GHSA-c296-3x4p-h9hf","url":"https://github.com/advisories/GHSA-c296-3x4p-h9hf","modified":"2026-11-03T21:32:25Z","checkedAt":"2026-11-04T21:15:34.589Z"},{"source":"ENISA EUVD","id":"EUVD-2026-116332","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-116332","modified":"Nov 3, 2026, 8:42:56 PM","checkedAt":"2026-11-04T21:15:34.888Z"}],"aiSummary":{"text":"Google Chrome versions prior to 157.0.8103.38 have an observable discrepancy in CORS, allowing a remote attacker to obtain cross-origin data via a crafted HTML page. The severity is rated as Low by Chromium.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-03T21:06:11.954Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-121138"}]}}