EUVD-2026-65488

Issue summary: ChaCha20-Poly1305 and AES-OCB decryption with an empty ciphertext can report success without verifying the supplied authentication tag when the operation is finalized by calling the EVPCipher function. Impact summary: Applications calling EVPCipher on an empty ciphertext and...

CVE-2026-75803

Issue summary: ChaCha20-Poly1305 and AES-OCB decryption with an empty ciphertext can report success without verifying the supplied authentication tag when the operation is finalized by calling the EVPCipher function. Impact summary: Applications calling EVPCipher on an empty ciphertext and...

CVE-2026-75803

OpenSSL's EVP_Cipher() API, when used as a one-shot decryption call for ChaCha20-Poly1305 and AES-OCB ciphers, skips the AEAD authentication tag verification if the input ciphertext is empty. A successful return value in that case does not guarantee the tag was actually validated, so applications...

CVE-2026-75803 AEAD Forgeries with Empty Ciphertext When Using EVP_Cipher()

Issue summary: ChaCha20-Poly1305 and AES-OCB decryption with an empty ciphertext can report success without verifying the supplied authentication tag when the operation is finalized by calling the EVPCipher function. Impact summary: Applications calling EVPCipher on an empty ciphertext and...

CVE-2026-75803

AEAD Forgeries with Empty Ciphertext When Using EVPCipher...

UBUNTU-CVE-2026-75803

AEAD Forgeries with Empty Ciphertext When Using EVPCipher...