CVE-2026-74901: jahlives openssl_encrypt

CVSS 9.8 (critical) · published 2026-08-17

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 products (NVD): jahlives openssl_encrypt

Fixed in (NVD): 1.4.0

Weakness: CWE-347

Source: NVD CVE-2026-74901

References

• https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-w4j7-wfgw-r52w
• https://www.vulncheck.com/advisories/openssl-encrypt-before-authentication-bypass-via-aes-ctr-fallback

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