🛡️ CVE-2025-13034
🟡 CVSS 5.9 — Medium ✅ No Known Exploit CWE-295 NVD
5.9
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity MEDIUM
CVSS Score 5.9
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE CWE-295
Public Exploit ✅ No
Source NVD
Published 2026-01-08
Updated 2026-06-02
Modified 2026-01-20

Affected Packages

Software From version Fixed in
curl 8.8.0 8.18.0

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