| Name | CVE-2025-26696 |
| Description | Certain crafted MIME email messages that claimed to contain an encrypted OpenPGP message, which instead contained an OpenPGP signed message, were wrongly shown as being encrypted. This vulnerability was fixed in Thunderbird 136 and Thunderbird 128.8. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-4081-1, DSA-5876-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| thunderbird (PTS) | bullseye | 1:115.12.0-1~deb11u1 | vulnerable |
| bullseye (security) | 1:140.10.0esr-1~deb11u1 | fixed | |
| bookworm | 1:140.6.0esr-1~deb12u1 | fixed | |
| bookworm (security) | 1:140.10.0esr-1~deb12u1 | fixed | |
| trixie | 1:140.8.0esr-1~deb13u1 | fixed | |
| trixie (security) | 1:140.10.0esr-1~deb13u1 | fixed | |
| forky | 1:140.9.1esr-1 | fixed | |
| sid | 1:140.10.0esr-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| thunderbird | source | bullseye | 1:128.8.0esr-1~deb11u1 | DLA-4081-1 | ||
| thunderbird | source | bookworm | 1:128.8.0esr-1~deb12u1 | DSA-5876-1 | ||
| thunderbird | source | (unstable) | 1:128.8.0esr-1 |
https://www.mozilla.org/en-US/security/advisories/mfsa2025-18/#CVE-2025-26696