CVE-2026-82208

Summary

With the wolfSSL backend, when CA caching is enabled and an `CURLOPT_SSL_CTX_FUNCTION` callback replaces the trust store, libcurl can silently reinstall the cached store after the callback returns. A certificate trusted by the cached store but rejected by the callback-selected store is then incorrectly accepted.

Impact & exploitability

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

Affected products we track (1)

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: https://curl.se/docs/CVE-2026-82208.html ↗

Additional information

• NVD record
• https://curl.se/docs/CVE-2026-82208.htmlPatch
• https://curl.se/docs/CVE-2026-82208.jsonAdvisory
• https://hackerone.com/reports/3973090Advisory