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CVE-2026-74901

openssl_encrypt before 1.4.0 Authentication Bypass via AES-CTR Fallback PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
jahlives / openssl_encryptaffected 0 before 1.4.0; unaffected 1.4.0

CWE

CWE-347

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.