{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-12303","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","state":"PUBLISHED","assignerShortName":"mozilla","dateReserved":"2026-06-15T15:08:11.833Z","datePublished":"2026-06-16T11:52:36.848Z","dateUpdated":"2026-06-16T16:08:31.424Z"},"containers":{"cna":{"affected":[{"product":"Firefox","vendor":"Mozilla","versions":[{"status":"unaffected","version":"152","lessThanOrEqual":"*","versionType":"rpm"}]},{"product":"Thunderbird","vendor":"Mozilla","versions":[{"status":"unaffected","version":"152","lessThanOrEqual":"*","versionType":"rpm"}]}],"descriptions":[{"lang":"en","value":"Information disclosure due to incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.","supportingMedia":[{"type":"text/html","base64":false,"value":"Information disclosure due to incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152 and Thunderbird 152."}]}],"title":"Information disclosure due to incorrect boundary conditions in the Graphics: WebGPU component","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2034608"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-57/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-60/"}],"credits":[{"lang":"en","value":"Michal Andryskowski"}],"providerMetadata":{"orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","shortName":"mozilla","dateUpdated":"2026-06-16T16:08:31.424Z"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-125","lang":"en","description":"CWE-125 Out-of-bounds Read"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":4.3,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","integrityImpact":"NONE","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-06-16T14:31:06.824125Z","id":"CVE-2026-12303","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-16T14:31:25.986Z"}}]}}