chainguard/libcrypto3-2.34

Vulnerabilities (41)

• CVE-2026-9076HigJun 9, 2026
  affected < 3.6.3-r0fixed 3.6.3-r0

  Issue summary: When CMS password-based decryption (RFC 3211 / PWRI key unwrap) processes attacker-supplied CMS data, an attacker-chosen stream-mode KEK cipher can trigger a heap out-of-bounds read in kek_unwrap_key(). Impact summary: A heap buffer over-read may trigger a crash w

• CVE-2026-7383HigJun 9, 2026
  affected < 3.6.3-r0fixed 3.6.3-r0

  Issue summary: A signed integer overflow when sizing the destination buffer for Unicode output in ASN1_mbstring_ncopy() can lead to a heap buffer overflow. Impact summary: A heap buffer overflow may lead to a crash or possibly attacker controlled code execution or other undefine

• CVE-2026-45447HigJun 9, 2026
  affected < 3.6.3-r0fixed 3.6.3-r0

  Issue summary: A specially crafted PKCS#7 or S/MIME signed message could trigger a use-after-free during PKCS#7 signature verification. Impact summary: A use-after-free may result in process crashes, heap corruption, or potentially remote code execution. When processing a PKCS#

• CVE-2026-45446MedJun 9, 2026
  affected < 3.6.3-r0fixed 3.6.3-r0

  Issue summary: The implementations of AES-SIV (RFC 5297) and AES-GCM-SIV (RFC 8452) mishandle the authentication of AAD (Additional Authenticated Data) with an empty ciphertext allowing a forgery of such messages. Impact summary: An attacker can forge empty messages with arbitra

• CVE-2026-45445HigJun 9, 2026
  affected < 3.6.3-r0fixed 3.6.3-r0

  Issue summary: When an application drives an AES-OCB context through the public EVP_Cipher() 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 re

• CVE-2026-42770LowJun 9, 2026
  affected < 3.6.3-r0fixed 3.6.3-r0

  Issue summary: When EVP_PKEY_derive_set_peer() is called with a DHX (X9.42) peer key, the peer key is not properly checked for the subgroup membership. Impact summary: A malicious peer which presents an X9.42 key carrying the victim's p and g parameters, a forged q = r (a small

• CVE-2026-42769MedJun 9, 2026
  affected < 3.6.3-r0fixed 3.6.3-r0

  Issue Summary: An error in the callback used to verify the certificate provided in a Root CA key update Certificate Management Protocol (CMP) message response rendered the certificate validation ineffectual, which could lead to escalation of credentials from the Registration Auth

• CVE-2026-42768LowJun 9, 2026
  affected < 3.6.3-r0fixed 3.6.3-r0

  Issue summary: The CMS_decrypt and PKCS7_decrypt functions are vulnerable to Bleichenbacher-style attack when an attacker is able to provide the CMS or S/MIME messages and observe the error code and/or decryption output. Impact summary: The Bleichenbacher-style attack allows an

• CVE-2026-42767MedJun 9, 2026
  affected < 3.6.3-r0fixed 3.6.3-r0

  Issue summary: An attacker-controlled CMP (Certificate Management Protocol) server could trigger a NULL pointer dereference in a CMP client application. Impact summary: A NULL pointer dereference causes a crash of the application and a Denial of Service. An attacker controlling

• CVE-2026-42766MedJun 9, 2026
  affected < 3.6.3-r0fixed 3.6.3-r0

  Issue summary: A specially crafted password-encrypted CMS message can trigger a NULL pointer dereference during CMS decryption. Impact summary: This NULL pointer dereference leads to an application crash and a Denial of Service. The CMS PasswordRecipientInfo.keyDerivationAlgori

• CVE-2026-42765HigJun 9, 2026
  affected < 3.6.3-r0fixed 3.6.3-r0

  Issue summary: When a partial-chain certificate verification is enabled together with OCSP response checking for the whole chain, a NULL dereference will happen if the verified chain does not have a self-signed trusted anchor, crashing the process. Impact summary: A NULL pointer

• CVE-2026-42764HigJun 9, 2026
  affected < 3.6.3-r0fixed 3.6.3-r0

  Issue summary: Receiving a QUIC initial packet with an invalid token may trigger a NULL pointer dereference in the OpenSSL QUIC server with address validation disabled. Impact summary: NULL pointer dereference typically causes abnormal termination of the affected QUIC server pro

• CVE-2026-35188MedJun 9, 2026
  affected < 3.6.3-r0fixed 3.6.3-r0

  Issue summary: A malicious server can exploit TLS OCSP stapling by delivering a crafted response through the status_request extension, triggering a double-free in the client's certificate verification path. Impact summary: Successful exploitation allows an attacker to corrupt he

• CVE-2026-34183HigJun 9, 2026
  affected < 3.6.3-r0fixed 3.6.3-r0

  Issue summary: Remote peer may exhaust heap memory of the QUIC server or client by flooding it with packets containing PATH_CHALLENGE frames. Impact summary: A malicious remote peer can cause an unbounded memory allocation which can lead to an abnormal termination of the applica

• CVE-2026-34182CriJun 9, 2026
  affected < 3.6.3-r0fixed 3.6.3-r0

  Issue Summary: Cryptographic Message Services (CMS) processing fails to perform sufficient input validation on the cipher and tag length fields of AuthEnvelopedData containers, leading to various potential compromises. Impact Summary: Attackers making use of these vulnerabilitie

• CVE-2026-34181HigJun 9, 2026
  affected < 3.6.3-r0fixed 3.6.3-r0

  Issue Summary: The PKCS#12 file processing fails to perform sufficient input validation for files that use Password-Based Message Authentication Code 1 (PBMAC1) integrity mechanism allowing a certificate and private key forgery. Impact Summary: An attacker impersonating a user c

• CVE-2026-34180HigJun 9, 2026
  affected < 3.6.3-r0fixed 3.6.3-r0

  Issue summary: Parsing a crafted DER-encoded ASN.1 structure with a primitive element whose content exceeds 2 gigabytes in length may cause a heap buffer over-read on 64-bit Unix and Unix-like platforms. Impact summary: The heap buffer over-read may crash the application (Denial

• CVE-2026-31790HigApr 7, 2026
  affected < 3.6.2-r0fixed 3.6.2-r0

  Issue summary: Applications using RSASVE key encapsulation to establish a secret encryption key can send contents of an uninitialized memory buffer to a malicious peer. Impact summary: The uninitialized buffer might contain sensitive data from the previous execution of the appli

• CVE-2026-31789CriApr 7, 2026
  affected < 3.6.2-r0fixed 3.6.2-r0

  Issue summary: Converting an excessively large OCTET STRING value to a hexadecimal string leads to a heap buffer overflow on 32 bit platforms. Impact summary: A heap buffer overflow may lead to a crash or possibly an attacker controlled code execution or other undefined behavior

• CVE-2026-28390HigApr 7, 2026
  affected < 3.6.2-r0fixed 3.6.2-r0

  Issue summary: During processing of a crafted CMS EnvelopedData message with KeyTransportRecipientInfo a NULL pointer dereference can happen. Impact summary: Applications that process attacker-controlled CMS data may crash before authentication or cryptographic operations occur