Priority MEDIUM 47
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 EVP_Cipher() function.
CVSS 3.1CRITICAL 9.1· Network · No auth · No interaction · EPSS 0.00254 · Published 2026-08-25 · Partial fix · 4.0.2, 3.6.4 +3 CWE-354
Priority MEDIUM 42
Issue summary: OpenSSL CMP password based protection verification only checks whether the protectionAlg parameter was not NULL and not its ASN.1 type, before treating it as a PBMParameter.
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.01602 · Published 2026-08-25 · Partial fix · 4.0.2, 3.6.4 +3 CWE-476
Priority MEDIUM 40
Issue summary: When OpenSSL processes QUIC traffic from a peer that repeatedly sends ack-eliciting packets while not acknowledging ACK-only responses, the QUIC stack can retain ACK-only packet metadata for the lifetime o…
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.0057 · Published 2026-08-25 · Partial fix · 4.0.2, 3.6.4 +2 CWE-770
Priority LOW 27
Issue summary: The OpenSSL Certificate Management Protocol (CMP) caches additional certificates (extraCerts) sent in a CMP message, but never expunges them (for instance if they are invalid).
CVSS 3.1MEDIUM 5.9· Network · No auth · No interaction · EPSS 0.00588 · Published 2026-08-25 · Partial fix · 4.0.2, 3.6.4 +3 CWE-770
Priority MEDIUM 51
Issue summary: OpenSSL CMP response validation passed an unexpected response sender distinguished name directly as the format string to `ERR_raise_data()`.
CVSS 3.1CRITICAL 9.8· Network · No auth · No interaction · EPSS 0.01159 · Published 2026-08-25 · Partial fix · 4.0.2, 3.6.4 +2 CWE-134
Priority MEDIUM 41
Issue summary: OpenSSL CMS decryption sizes the key-unwrap output buffer based on querying the unwrapped key size, but the AES-WRAP-PAD unwrap primitive can write and cleanse more bytes than that query reports, causing a…
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00916 · Published 2026-08-25 · Partial fix · 4.0.2, 3.6.4 +4 CWE-787
Priority MEDIUM 40
Issue summary: Receiving a DTLS record for a future epoch while a handshake is in progress causes OpenSSL to buffer far more memory than the record itself requires.
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00622 · Published 2026-08-25 · Partial fix · 4.0.2, 3.6.4 +5 CWE-405
Priority MEDIUM 42
Issue summary: QUIC server may double free QRX (QUIC record layer RX) object when channel creation fails for initial packet.
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.01697 · Published 2026-08-25 · Partial fix · 4.0.2, 3.6.4 +1 CWE-415
Priority MEDIUM 41
Issue summary: In a server or client configuration with RFC7250 Raw Public Keys (RPKs) enabled, and only the private key (with no associated certificate) configured locally, a NULL pointer dereference may occur when the…
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.01167 · Published 2026-08-25 · Partial fix · 4.0.2, 3.6.4 +2 CWE-476