CVE-2018-12374

Name: CVE-2018-12374
Creator: NVD / NIST
Published: 2018-10-18T13:29:04.307+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.04%

Last modified Jun 17, 2026

CVE-2018-12374 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 2.04% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

2.04%

78.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Mozilla	Thunderbird	< 52.9.0
Redhat	Enterprise Linux	6.0
Redhat	Enterprise Linux	7.0
Redhat	Enterprise Linux	7.5
Redhat	Enterprise Linux	7.6
Redhat	Enterprise Linux Desktop	6.0
Redhat	Enterprise Linux Desktop	7.0
Redhat	Enterprise Linux Server	6.0
Redhat	Enterprise Linux Server	7.0
Redhat	Enterprise Linux Workstation	6.0
Redhat	Enterprise Linux Workstation	7.0
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	17.10
Canonical	Ubuntu Linux	18.04

References

http://www.securityfocus.com/bid/104613Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2018:2251Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2252Mailing List, Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1462910Issue Tracking, Permissions Required, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00013.htmlPatch, Third Party Advisory
https://security.gentoo.org/glsa/201811-13Third Party Advisory
https://usn.ubuntu.com/3714-1/Third Party Advisory
https://www.debian.org/security/2018/dsa-4244Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2018-18/Vendor Advisory
http://www.securityfocus.com/bid/104613Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2018:2251Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2252Mailing List, Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1462910Issue Tracking, Permissions Required, Vendor Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00013.htmlPatch, Third Party Advisory
https://security.gentoo.org/glsa/201811-13Third Party Advisory
https://usn.ubuntu.com/3714-1/Third Party Advisory
https://www.debian.org/security/2018/dsa-4244Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2018-18/Vendor Advisory

Timeline

Published: Oct 18, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-12374?

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.

How severe is CVE-2018-12374?

Severity scoring for CVE-2018-12374 is pending analysis. The EPSS model estimates a 2.04% probability of exploitation in the next 30 days.

How do I fix CVE-2018-12374?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-12374?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST