{"id":"CVE-2026-100822","state":"PUBLISHED","title":"Spoofing issue in the Networking: HTTP component","description":"Spoofing issue in the Networking: HTTP component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.","publishedAt":"2026-09-29T12:36:30.870Z","updatedAt":"2026-09-30T20:11:10.305Z","severity":{"score":5.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L","source":"CISA-ADP"},"assigner":"mozilla","products":["Mozilla Firefox","Mozilla Thunderbird"],"affected":[{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"153.4","status":"unaffected","lessThanOrEqual":"153.*","versionType":"rpm"},{"version":"157","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]},{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"153.4","status":"unaffected","lessThanOrEqual":"153.*","versionType":"rpm"},{"version":"157","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]}],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=2051115","https://www.mozilla.org/security/advisories/mfsa2026-100/","https://www.mozilla.org/security/advisories/mfsa2026-101/","https://www.mozilla.org/security/advisories/mfsa2026-103/","https://www.mozilla.org/security/advisories/mfsa2026-97/"],"weaknesses":["CWE-451"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/100xxx/CVE-2026-100822.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-100822","state":"PUBLISHED","datePublished":"2026-09-29T12:36:30.870Z","dateUpdated":"2026-09-30T20:11:10.305Z","assignerShortName":"mozilla","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateReserved":"2026-09-26T19:18:38.463Z"},"containers":{"cna":{"title":"Spoofing issue in the Networking: HTTP component","descriptions":[{"lang":"en","value":"Spoofing issue in the Networking: HTTP component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157."}],"affected":[{"vendor":"Mozilla","product":"Firefox","versions":[{"version":"153.4","status":"unaffected","lessThanOrEqual":"153.*","versionType":"rpm"},{"version":"157","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]},{"vendor":"Mozilla","product":"Thunderbird","versions":[{"version":"153.4","status":"unaffected","lessThanOrEqual":"153.*","versionType":"rpm"},{"version":"157","status":"unaffected","lessThanOrEqual":"*","versionType":"rpm"}]}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2051115"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-100/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-101/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-103/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-97/"}],"providerMetadata":{"shortName":"mozilla","orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","dateUpdated":"2026-09-30T17:21:06.977Z"},"credits":[{"lang":"en","value":"Tomoya Nakanishi"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.4,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L","integrityImpact":"NONE","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"LOW","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"id":"CVE-2026-100822","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-30T19:46:40.005806Z"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-451","lang":"en","type":"CWE","description":"CWE-451 User Interface (UI) Misrepresentation of Critical Information"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-30T20:11:10.305Z"}}]}}}