CVE-2025-14819

Published: Jan 8, 2026Modified: Jun 17, 2026

5.3

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Exploitability: 1.6 / Impact: 3.6

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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.

Affected (1)

Products: Haxx: Curl

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Haxx Curl	From 7.87.0 to 8.18.0

Related CWEs

Improper Certificate Validation

The product does not validate, or incorrectly validates, a certificate.

References (3)

https://curl.se/docs/CVE-2025-14819.html

Source: 2499f714-1537-4658-8207-48ae4bb9eae9

MitigationPatchVendor Advisory

https://curl.se/docs/CVE-2025-14819.json

Source: 2499f714-1537-4658-8207-48ae4bb9eae9

Vendor Advisory

http://www.openwall.com/lists/oss-security/2026/01/07/5

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListMitigationPatchThird Party Advisory

Timeline

No history available yet.