CVE-2026-45445

A vulnerability exists in OpenSSL where applications using the EVP_Cipher() one-shot interface with an AES-OCB context will have their application-supplied initialisation vector (IV) silently discarded. Because the one-shot handler fails to flush the IV, every message encrypted under the same key...

UBUNTU-CVE-2026-45445

Issue summary: When an application drives an AES-OCB context through the public EVPCipher one-shot interface, the application-supplied initialisation vector IV is silently discarded. Impact summary: Every message encrypted under the same key uses the same effective nonce regardless of the IV...