CVE-2026-118179

UNKNOWN 0.0

Request forgery via news: links

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

Clicking a news: or snews: link that referenced a message-ID made Thunderbird connect, without asking, to the host and port given in the link, even if it was not a configured news server. Line breaks in the message-ID were sent to the server unmodified, so a crafted link could send arbitrary commands to services reachable from the user's network. In addition, snews: links to such servers connected without TLS. This vulnerability was fixed in Thunderbird 159 and Thunderbird 153.6.

Vendor	mozilla
Product	thunderbird
Ecosystems	Browser JavaScript
Industries	Technology
Published	Oct 27, 2026
Last Updated	Oct 27, 2026

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Affected Versions

Mozilla / Thunderbird

All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗

bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=2077789 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-121/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-122/

Credits

Nguyen Tuan Hung