CVE-2026-118175
Severity not reportedData quality: partial.
Some fields were not provided by the source.
When replying to, forwarding, or editing a crafted email message as new, Thunderbird could embed parts of a different message stored in the same folder into th…
When replying to, forwarding, or editing a crafted email message as new, Thunderbird could embed parts of a different message stored in the same folder into the message being composed, without showing a blocked content warning. If the user sent the message, the content of the other message was disclosed to the recipients. This vulnerability was fixed in Thunderbird 159 and Thunderbird 153.6.
CVSS
—
Not reported by the source
Timeline (UTC)
Published: 2026-10-27 19:17
Modified: 2026-10-28 14:42
NVD status: Deferred
Last synced 1 day ago
Verified against the source API 2026-10-28 14:55 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2081720 security@mozilla.org
- https://www.mozilla.org/security/advisories/mfsa2026-121/ security@mozilla.org
- https://www.mozilla.org/security/advisories/mfsa2026-122/ security@mozilla.org
Data sources
NVD CVE API 2.0 — fetched 2026-10-28 14:55 UTC · record ↗