Ambiguous parsing of mail headers
Summary
| CVE | CVE-2026-92238 |
|---|---|
| State | PUBLISHED |
| Assigner | mozilla |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-15 20:19:41 UTC |
| Updated | 2026-09-16 19:34:05 UTC |
| Description | A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential memory safety violations. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3. |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Mozilla | Thunderbird | unaffected 140.16 140.* rpm | Not specified |
| CNA | Mozilla | Thunderbird | unaffected 153.3 153.* rpm | Not specified |
| CNA | Mozilla | Thunderbird | unaffected 156 * rpm | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| www.mozilla.org/security/advisories/mfsa2026-96 | [email protected] | www.mozilla.org | |
| www.mozilla.org/security/advisories/mfsa2026-94 | [email protected] | www.mozilla.org | |
| www.mozilla.org/security/advisories/mfsa2026-95 | [email protected] | www.mozilla.org | |
| bugzilla.mozilla.org/show_bug.cgi | [email protected] | bugzilla.mozilla.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Ramesh Adhikari, Dr. Faruk Kazi (CoE-CNDS Lab, VJTI, Mumbai, India) (en)
There are currently no legacy QID mappings associated with this CVE.