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Fencer Intel
medium 5.3

CVE-2019-8337 json

In msmtp 1.8.2 and mpop 1.4.3, when tls_trust_file has its default configuration, certificate-verification results are not properly checked.

published 7y ago modified 4mo ago also EUVD-2019-17727

cvss
5.3
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 60%
public exploits
0
none known

Summary

In msmtp 1.8.2 and mpop 1.4.3, when tls_trust_file has its default configuration, certificate-verification results are not properly checked.

Patch / fix

  • mpop Debian 14, Debian 13, Debian 12 1.4.3-1
  • msmtp Debian 14, Debian 13, Debian 12 1.8.3-1

debian advisories DEBIAN-CVE-2019-8337

  • mpop Ubuntu 20.04 LTS 1.4.3-1

ubuntu advisories UBUNTU-CVE-2019-8337

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • mstmp openSUSE Tumbleweed 1.8.16-1.1

opensuse advisories openSUSE-SU-2024:11064-1

  • msmtp Arch Linux 1.8.3-1

arch linux advisories AVG-905

Is CVE-2019-8337 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

0.92% chance of exploitation in the next 30 days, higher than 60% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-295 Improper Certificate Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.