CVE-2025-14819 Affecting curl package, versions <8.18.0~rc3-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.69% (50th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-CURL-14894689
  • published8 Jan 2026
  • disclosed8 Jan 2026

Introduced: 8 Jan 2026

CVE-2025-14819  (opens in a new tab)

How to fix?

Upgrade Debian:unstable curl to version 8.18.0~rc3-1 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 Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

When doing TLS related transfers with reused easy or multi handles and altering the CURLSSLOPT_NO_PARTIALCHAIN option, libcurl could accidentally reuse a CA store cached in memory for which the partial chain option was reversed. Contrary to the user's wishes and expectations. This could make libcurl find and accept a trust chain that it otherwise would not.

CVSS Base Scores

version 3.1