CVE-2018-12374

critical
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
9.5

Description

Plaintext of decrypted emails can leak through by user submitting an embedded form by pressing enter key within a text input field. This vulnerability affects Thunderbird < 52.9.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-12374

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-12374.html

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-201807-4

OS impact

OSVersionStatusFixed in
arch archfixed52.9.1-1
suse slesaffected
debian debianbookwormfixed1:52.9.0-1
debian debianbullseyefixed1:52.9.0-1
debian debianforkyfixed1:52.9.0-1
debian debiansidfixed1:52.9.0-1
debian debiantrixiefixed1:52.9.0-1

References

Verify integrity in audit chain (admin only). AS-IS.