{"id":"CVE-2026-103500","published":"2026-09-30T18:18:18.120","lastModified":"2026-09-30T19:05:23.307","description":"An attacker could cause a heap buffer overflow by getting a user to open an email that is greater than or equal to 2GB in size. This vulnerability was fixed in Thunderbird 157, Thunderbird 140.17, and Thunderbird 153.4.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2070267","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-101/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-102/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-103/","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}