Improper Certificate Validation Affecting fossil package, versions <1:2.15.2-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.57% (43rd percentile)

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  • Snyk IDSNYK-DEBIAN14-FOSSIL-11743437
  • published10 Aug 2025
  • disclosed12 Jul 2021

Introduced: 12 Jul 2021

CVE-2021-36377  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade Debian:14 fossil to version 1:2.15.2-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream fossil package and not the fossil package as distributed by Debian. See How to fix? for Debian:14 relevant fixed versions and status.

Fossil before 2.14.2 and 2.15.x before 2.15.2 often skips the hostname check during TLS certificate validation.

CVSS Base Scores

version 3.1