All vulnerabilities

Servers and applications

CVE-2025-14819

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.

Severity
Medium 5.3
Published
8 Jan 2026
Last changed
14 Oct 2026
Added to UpHeron
21 Oct 2026
Fixed in
8.18.0
Sources
NVD

Affected software

SoftwareAffected versions
curlServers and applications · cpe:a:haxx:curl
  • From 7.87.0 before 8.18.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-14819
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-14819