The OpenSSL Project güvenlik açıkları (CVE)

The OpenSSL Project için yayımlanan CVE kayıtları, en yenisi üstte. Yeni bir açık çıktığında e-posta almak için takip edin.

148 sonuç
7.5Yüksek
CVE-2026-84784

QUIC: Unbounded RETIRE_CONNECTION_ID Backlog

OpenSSL OpenSSL

Issue summary: A malicious remote peer may flood the local QUIC stack with NEW_CONNECTION_ID frames by avoiding a limit check on how many connection IDs the remote QUIC stack can use. Impact summary: The local QUIC stack sends a RETIRE_CONN_ID frame for ever…

7.5Yüksek
CVE-2026-84783

Use-After-Free in X.509 Extension Cache Under Concurrent Use

OpenSSL OpenSSL

Issue summary: The first concurrent use of the same X.509 certificate by several threads may cause its cached extension data to be freed while another thread is still using it. Impact summary: A remote, unauthenticated peer could crash a multi-threaded TLS c…

8.2Yüksek
CVE-2026-84782

DTLS Retransmits Handshake Messages From a Stale Buffer Offset

OpenSSL OpenSSL

Issue summary: The DTLS retransmission logic does not correctly handle a handshake message write that is suspended part-way through. The retransmitted message can be read past the message buffer and the retransmission overwrites the internal state the suspend…

3.7Düşük
CVE-2026-77696

Timing Side-Channel in SM2 Signature Generation

OpenSSL OpenSSL

Issue summary: SM2 signature generation uses non-constant-time arithmetic on secret values, forming a timing side-channel. Impact summary: An attacker able to measure SM2 signing times may learn information about the per-signature secret nonce, which over ma…

5.3Orta
CVE-2026-75806

Unauthenticated and Undersized DTLS 1.2 AEAD Record Causes DoS

OpenSSL OpenSSL

Issue summary: An established DTLS 1.2 association using an AEAD cipher suite can be terminated by a single unauthenticated datagram whose encrypted fragment is shorter than the mandatory explicit IV and authentication tag overhead. Impact summary: An attack…

1.1%EPSS
7.5Yüksek
CVE-2026-54873

QUIC STREAM Fragment Metadata DoS

OpenSSL OpenSSL

Issue summary: QUIC process may keep memory for QUIC packet buffer for much longer period than necessary. Impact summary: Remote peer can exploit this vulnerability by sending maliciously crafted packets, making the local QUIC stack to keep the memory for pa…

5.3Orta
CVE-2026-42772

Potential CPU DoS via O(n^2) Fragment Reassembly in QUIC

OpenSSL OpenSSL

Issue summary: The QUIC stream reassembly algorithm performance deteriorates progressively as packets are arriving out of order. The worst case has a quadratic complexity proportional to the number of stream frames kept in the buffer for the received stream d…

3.7Düşük
CVE-2026-35191

QUIC Unvalidated Amplification Credit may be Over Accounted

OpenSSL OpenSSL

Issue summary: The OpenSSL QUIC server, when configured to not preform address validation, can be forced to count incoming packets multiple times in its unvalidated credit computation, leading to a violation of the RFC 9000 unvalidated connection amplificatio…

5.3Orta
CVE-2026-35189

Excessive Memory Allocation in Relative CRLDP Processing

OpenSSL OpenSSL

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant mem…

9.1Kritik
CVE-2026-75803

AEAD Forgeries with Empty Ciphertext When Using EVP_Cipher()

OpenSSL OpenSSL

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. Impact summary: Applications calling E…

7.5Yüksek
CVE-2026-63075

QUIC ACK-only Packet Retention Can Cause Memory Exhaustion

OpenSSL OpenSSL

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 of the connection. Impact summary: A re…

5.9Orta
CVE-2026-63074

CMP Indefinite Cache Growth of ExtraCerts

OpenSSL OpenSSL

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). If a server reuses an OSSL_CMP_CTX frequently, this cache of extra…

7.5Yüksek
CVE-2026-63072

Heap Buffer Overflow in CMS Key Unwrapping

OpenSSL OpenSSL

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 an 8-byte out-of-bounds heap write. Imp…

7.5Yüksek
CVE-2026-14456

Unbounded Memory Growth in QUIC Server Incoming Channel Queue

OpenSSL OpenSSL

Issue summary: When an OpenSSL QUIC server (Listener SSL object) processes valid QUIC Initial packets for unknown destination connection IDs, it can allocate and queue new incoming channels without enforcing any limit. Impact summary: A remote peer that can …

7.5Yüksek
CVE-2026-54876

Client-Side Memory Leak in OCSP Response Checking

OpenSSL OpenSSL

Issue summary: A malicious TLS server can cause a memory leak in a TLS client that has enabled OCSP response checking by sending an OCSP response that contains no single response entries. Impact summary: An attacker can leak an attacker-tunable amount of mem…