Medium severity5.5OSV Advisory· Published Aug 17, 2026· Updated Sep 1, 2026
CVE-2026-74890
CVE-2026-74890
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2(expand)+ 1 more
- (no CPE)
- (no CPE)range: <1.4.0
Patches
Vulnerability mechanics
References
2- github.com/jahlives/openssl_encrypt/security/advisories/GHSA-rvc2-5jxq-gpcjnvdMitigationVendor Advisory
- www.vulncheck.com/advisories/openssl-encrypt-before-hmac-authentication-bypass-via-environment-variablenvdThird Party Advisory
News mentions
1- Jahlives openssl_encrypt: 25 Critical Flaws Including Auth Bypass and Sandbox Escapes Disclosed TogetherVypr Intelligence · Aug 17, 2026