VULNERABILITY INTELLIGENCE

CVE-2026-74890

CVSS score9.3 CRITICAL
EPSS probability0.21%
CISA KEVNot currently listed
Published2026-08-17
Last modified2026-10-24
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Description

openssl_encrypt versions before 1.4.0 contain an authentication bypass vulnerability in CamelliaCipher that disables HMAC tag generation and verification when the PYTEST_CURRENT_TEST environment variable is set. Attackers with code execution can set this environment variable to produce unauthenticated ciphertext and bypass integrity protection on encrypted data.

Weakness classification

  • CWE-345: Insufficient Verification of Data Authenticity

Primary references