CVE-2026-82208

A flaw was found in libcurl when using the wolfSSL backend. When CA Certificate Authority caching is enabled and a CURLOPTSSLCTXFUNCTION callback is used to replace the trust store, libcurl can silently reinstall the cached store. This can lead to a scenario where a certificate that should be...

Astra Linux – Vulnerability in curl

With the wolfSSL backend, when CA caching is enabled and a CURLOPTSSLCTXFUNCTION callback replaces the trust store, libcurl can silently reinstall the cached store after the callback returns. This results in a certificate trusted by the cached store but rejected by the callback-selected store bei...

curl: TLS session resumption client cert bypass with CURLOPT_SSL_CTX_FUNCTION

AI use Cipher, by Causal Security, was used to find, exploit and confirm this issue. A further check was carried out to establish, as far as is possible from outside the project, that it is neither a duplicate of an existing report or advisory nor documented as intended behaviour. Everything belo...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation in the CURLOPTSSLCTXFUNCTION callback process when CA caching is enabled with the wolfSSL backend. An attacker can bypass intended trust store restrictions by presenting a certificate that is trusted by t...

AZL-99756 CVE-2026-82208 affecting package curl 8.11.1-11

With the wolfSSL backend, when CA caching is enabled and an CURLOPTSSLCTXFUNCTION 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 incorrectl...

CVE-2026-82208 wolfSSL CA-cache hit overrides callback

With the wolfSSL backend, when CA caching is enabled and an CURLOPTSSLCTXFUNCTION 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 incorrectl...

CVE-2026-82208: Improper Certificate Validation

With the wolfSSL backend, when CA caching is enabled and an CURLOPTSSLCTXFUNCTION 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 incorrectl...