openssl: CMS AuthEnvelopedData Processing May Accept Forged Messages

A flaw was found in OpenSSL's Cryptographic Message Services CMS AuthEnvelopedData processing. An on-path attacker can exploit insufficient input validation on cipher and tag length fields by sending specially crafted CMS messages. This can lead to the forging of messages or bypassing integrity...

EUVD-2026-35478

Issue Summary: Cryptographic Message Services CMS processing fails to perform sufficient input validation on the cipher and tag length fields of AuthEnvelopedData containers, leading to various potential compromises. Impact Summary: Attackers making use of these vulnerabilities may achieve...

ALPINE-CVE-2026-34182

Issue Summary: Cryptographic Message Services CMS processing fails to perform sufficient input validation on the cipher and tag length fields of AuthEnvelopedData containers, leading to various potential compromises. Impact Summary: Attackers making use of these vulnerabilities may achieve...

CVE-2026-34182

OpenSSL is vulnerable to a flaw in Cryptographic Message Services (CMS) processing due to insufficient input validation of the cipher and tag length fields in AuthEnvelopedData containers. This allows attackers to achieve key-equivalent functionality for a CMS recipient or bypass integrity valida...

PT-2026-47831

Name of the Vulnerable Software and Affected Versions OpenSSL affected versions not specified Description Cryptographic Message Services CMS processing fails to perform sufficient input validation on the cipher and tag length fields of AuthEnvelopedData containers. This allows attackers to achiev...