{"id":"CVE-2026-0887","state":"PUBLISHED","title":"Clickjacking issue, information disclosure in the PDF Viewer component","description":"Clickjacking issue, information disclosure in the PDF Viewer component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.","publishedAt":"2026-01-13T13:30:57.847Z","updatedAt":"2026-04-13T13:51:59.523Z","severity":{"score":4.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","source":"CISA-ADP"},"assigner":"mozilla","products":["Mozilla Firefox","Mozilla Thunderbird"],"affected":[{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"140.7","status":"unaffected","lessThanOrEqual":"140.*","versionType":"rpm"},{"version":"147","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]},{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"140.7","status":"unaffected","lessThanOrEqual":"140.*","versionType":"rpm"},{"version":"147","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]}],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=2006500","https://www.mozilla.org/security/advisories/mfsa2026-01/","https://www.mozilla.org/security/advisories/mfsa2026-03/","https://www.mozilla.org/security/advisories/mfsa2026-04/","https://www.mozilla.org/security/advisories/mfsa2026-05/"],"weaknesses":["CWE-497"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/0xxx/CVE-2026-0887.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-0887","state":"PUBLISHED","datePublished":"2026-01-13T13:30:57.847Z","dateUpdated":"2026-04-13T13:51:59.523Z","assignerShortName":"mozilla","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateReserved":"2026-01-13T13:30:57.650Z"},"containers":{"cna":{"title":"Clickjacking issue, information disclosure in the PDF Viewer component","descriptions":[{"lang":"en","value":"Clickjacking issue, information disclosure in the PDF Viewer component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7."}],"affected":[{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"140.7","status":"unaffected","lessThanOrEqual":"140.*","versionType":"rpm"},{"version":"147","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]},{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"140.7","status":"unaffected","lessThanOrEqual":"140.*","versionType":"rpm"},{"version":"147","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2006500"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-01/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-03/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-04/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-05/"}],"providerMetadata":{"shortName":"mozilla","orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateUpdated":"2026-04-13T13:51:59.523Z"},"credits":[{"lang":"en","value":"Lyra Rebane"}]},"adp":[{"title":"CISA ADP Vulnrichment","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":"2026-01-15T15:32:40.994965Z","id":"CVE-2026-0887","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-497","type":"CWE","lang":"en","description":"CWE-497 Exposure of Sensitive System Information to an Unauthorized Control Sphere"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-15T15:32:44.439Z"}}]}}}