PT-2026-76626 · Pypi · Openssl-Encrypt

CVE-2026-74890

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Published

2026-08-17

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Updated

2026-08-17

CVSS v4.0

9.3

Critical

VectorAV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Name of the Vulnerable Software and Affected Versions openssl encrypt versions prior to 1.4.0
Description An authentication bypass exists in the CamelliaCipher component. When the PYTEST CURRENT TEST environment variable is set, HMAC (Hash-based Message Authentication Code) tag generation and verification are disabled. This allows an attacker with code execution capabilities to produce unauthenticated ciphertext and bypass the integrity protection of encrypted data.
Recommendations Update openssl encrypt to version 1.4.0 or later.

Exploit

Fix

Insufficient Verification of Data Authenticity

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Weakness Enumeration

Related Identifiers

CVE-2026-74890
GHSA-RVC2-5JXQ-GPCJ
PYSEC-2026-3766

Affected Products

Openssl-Encrypt