{"id":"CVE-2026-12456","state":"PUBLISHED","title":"Inappropriate implementation in Extensions in Google Chrome prior to 149.0.7827.155 allowed an attacker who convinced a user to install a malicious extension to bypass same origin ","description":"Inappropriate implementation in Extensions in Google Chrome prior to 149.0.7827.155 allowed an attacker who convinced a user to install a malicious extension to bypass same origin policy via a crafted Chrome Extension. (Chromium security severity: High)","publishedAt":"2026-06-17T01:38:19.909Z","updatedAt":"2026-06-17T10:56:40.032Z","severity":{"score":4.2,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","source":"CISA-ADP"},"assigner":"Chrome","products":["Google Chrome"],"affected":[{"vendor":"Google","product":"Chrome","versions":[{"version":"149.0.7827.155","status":"affected","lessThan":"149.0.7827.155","versionType":"custom"}]}],"references":["https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01750511403.html","https://issues.chromium.org/issues/517124587"],"weaknesses":["CWE-20"],"ingestedAt":"2026-10-29T20:10:52.580Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/12xxx/CVE-2026-12456.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-12456","state":"PUBLISHED","datePublished":"2026-06-17T01:38:19.909Z","dateUpdated":"2026-06-17T10:56:40.032Z","assignerShortName":"Chrome","assignerOrgId":"ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28","dateReserved":"2026-06-16T19:38:30.107Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"Inappropriate implementation in Extensions in Google Chrome prior to 149.0.7827.155 allowed an attacker who convinced a user to install a malicious extension to bypass same origin policy via a crafted Chrome Extension. (Chromium security severity: High)"}],"affected":[{"vendor":"Google","product":"Chrome","versions":[{"version":"149.0.7827.155","status":"affected","lessThan":"149.0.7827.155","versionType":"custom"}]}],"references":[{"url":"https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01750511403.html"},{"url":"https://issues.chromium.org/issues/517124587"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-20","lang":"en","description":"Insufficient validation of untrusted input"}]}],"providerMetadata":{"shortName":"Chrome","orgId":"ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28","dateUpdated":"2026-06-17T01:38:19.909Z"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":4.2,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","integrityImpact":"LOW","userInteraction":"REQUIRED","attackComplexity":"HIGH","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-06-17T10:56:36.691920Z","id":"CVE-2026-12456","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-17T10:56:40.032Z"}}]}}}