CVE-2026-5501 Detail
Received
This CVE record has recently been published to the CVE List and has been included within the NVD dataset. DescriptionwolfSSL_X509_verify_cert in the OpenSSL compatibility layer accepts a certificate chain in which the leaf's signature is not checked, if the attacker supplies an untrusted intermediate with Basic Constraints `CA:FALSE` that is legitimately signed by a trusted root. An attacker who obtains any leaf certificate from a trusted CA (e.g. a free DV cert from Let's Encrypt) can forge a certificate for any subject name with any public key and arbitrary signature bytes, and the function returns `WOLFSSL_SUCCESS` / `X509_V_OK`. The native wolfSSL TLS handshake path (`ProcessPeerCerts`) is not susceptible and the issue is limited to applications using the OpenSSL compatibility API directly, which would include integrations of wolfSSL into nginx and haproxy. Metrics
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Weakness Enumeration
Quick InfoCVE Dictionary Entry:CVE-2026-5501 NVD Published Date: 04/10/2026 NVD Last Modified: 04/10/2026 Source: wolfSSL Inc. |
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