Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Jahlives | Openssl Encrypt | < 1.4.0 |
Related Weaknesses (CWE)
References
- https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-w4j7-wfgw-rMitigationVendor Advisory
- https://www.vulncheck.com/advisories/openssl-encrypt-before-authentication-bypasThird Party Advisory
FAQ
What is CVE-2026-74901?
CVE-2026-74901 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 ...
How severe is CVE-2026-74901?
CVE-2026-74901 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-74901?
Check the references section above for vendor advisories and patch information. Affected products include: Jahlives Openssl Encrypt.