CVE-2025-14819

Name: CVE-2025-14819
Creator: NVD / NIST
Published: 2026-01-08T10:15:46.73+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.68%

Last modified Jun 17, 2026

CVE-2025-14819 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 0.68% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.68%

47.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-295

Affected Software

Vendor	Product	Versions
Haxx	Curl	>= 7.87.0, < 8.18.0

References

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

Timeline

Published: Jan 8, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-14819?

How severe is CVE-2025-14819?

CVE-2025-14819 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.68% probability of exploitation in the next 30 days.

How do I fix CVE-2025-14819?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-14819?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST