CVE-2025-14819

MEDIUM

curl 7.87.0-8.17.9 - Improper Certificate Validation via Cached CA Store Reuse

Title source: llm
STIX 2.1

Description

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.

References (3)

Core 3
Core References
Vendor Advisory, Mitigation, Patch
https://curl.se/docs/CVE-2025-14819.html
Mailing List, Third Party Advisory, Mitigation, Patch
http://www.openwall.com/lists/oss-security/2026/01/07/5

Scores

CVSS v3 5.3
EPSS 0.0063
EPSS Percentile 45.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-295
Status published
Products (1)
haxx/curl 7.87.0 - 8.18.0
Published Jan 08, 2026
Tracked Since Feb 18, 2026