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CVE-2026-74901

CRITICAL CVSS: 9.8 Published: 2026-08-17 Modified: 2026-08-17

Description

openssl_encrypt versions before 1.4.0 contain an authentication bypass vulnerability in pqc.py where AES-GCM decryption failures trigger fallback to unauthenticated AES-CTR mode. Attackers can modify ciphertext in transit to bypass integrity verification and perform bit-flipping attacks without detection.

Affected Platforms

Unknown

Weakness Type

CWE-347

References