CVE-2026-92238 — Ambiguous parsing of mail headers
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, …
Published: 2026-09-15 · CVSS: 9.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7