Improper Certificate Validation Affecting libcurl package, versions [7.87.0,8.18.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-CONAN-LIBCURL-14908853
- published9 Jan 2026
- disclosed8 Jan 2026
- creditStanislav Fort
Introduced: 8 Jan 2026
CVE-2025-14819 (opens in a new tab)How to fix?
Upgrade libcurl to version 8.18.0 or higher.
Overview
Affected versions of this package are vulnerable to Improper Certificate Validation in the handling of TLS transfers when reusing easy or multi handles and modifying the CURLSSLOPT_NO_PARTIALCHAIN option. An attacker can cause the application to accept an unintended trust chain by exploiting the reuse of a cached CA store with reversed partial chain settings.
Note:
This issue affects only users building libcurl with OpenSSL (or one of the many OpenSSL forks) in runtime.