CVE-2025-13034 Affecting curl package, versions <8.14.1-2ubuntu1.1


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.01% (2nd percentile)

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  • Snyk IDSNYK-UBUNTU2510-CURL-14894734
  • published8 Jan 2026
  • disclosed8 Jan 2026

Introduced: 8 Jan 2026

CVE-2025-13034  (opens in a new tab)

How to fix?

Upgrade Ubuntu:25.10 curl to version 8.14.1-2ubuntu1.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Ubuntu. See How to fix? for Ubuntu:25.10 relevant fixed versions and status.

When using CURLOPT_PINNEDPUBLICKEY option with libcurl or --pinnedpubkey with the curl tool,curl should check the public key of the server certificate to verify the peer.

This check was skipped in a certain condition that would then make curl allow the connection without performing the proper check, thus not noticing a possible impostor. To skip this check, the connection had to be done with QUIC with ngtcp2 built to use GnuTLS and the user had to explicitly disable the standard certificate verification.

CVSS Base Scores

version 3.1