Cryptography.Io Cryptography vulnerabilities

CVE-2023-0286 [HIGH] CWE-843 Vulnerable OpenSSL included in cryptography wheels Vulnerable OpenSSL included in cryptography wheels pyca/cryptography's wheels include a statically linked copy of OpenSSL. The versions of OpenSSL included in cryptography 0.8.1-39.0.0 are vulnerable to a security issue. More details about the vulnerabilities themselves can be found in https://www.openssl.org/news/secadv/20221213.txt and https://www.openssl.org/news/secadv/20230207.txt. If you are building cryptogr

CVE-2020-36242 [CRITICAL] CWE-190 CVE-2020-36242: In the cryptography package before 3.3.2 for Python, certain sequences of update calls to symmetrica In the cryptography package before 3.3.2 for Python, certain sequences of update calls to symmetrically encrypt multi-GB values could result in an integer overflow and buffer overflow, as demonstrated by the Fernet class.

CVE-2026-39892 [CRITICAL] CWE-119 CVE-2026-39892: cryptography is a package designed to expose cryptographic primitives and recipes to Python develope cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. From 45.0.0 to before 46.0.7, if a non-contiguous buffer was passed to APIs which accepted Python buffers (e.g. Hash.update()), this could lead to buffer overflows. This vulnerability is fixed in 46.0.7.

CVE-2023-50782 [HIGH] CWE-203 CVE-2023-50782: A flaw was found in the python-cryptography package. This issue may allow a remote attacker to decry A flaw was found in the python-cryptography package. This issue may allow a remote attacker to decrypt captured messages in TLS servers that use RSA key exchanges, which may lead to exposure of confidential or sensitive data.

CVE-2018-10903 [HIGH] CWE-20 PyCA Cryptography vulnerable to GCM tag forgery PyCA Cryptography vulnerable to GCM tag forgery A flaw was found in python-cryptography versions between >=1.9.0 and <2.3. The finalize_with_tag API did not enforce a minimum tag length. If a user did not validate the input length prior to passing it to finalize_with_tag an attacker could craft an invalid payload with a shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance of passing the MAC check. GC

CVE-2024-26130 [HIGH] CWE-476 CVE-2024-26130: cryptography is a package designed to expose cryptographic primitives and recipes to Python develope cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Starting in version 38.0.0 and prior to version 42.0.4, if `pkcs12.serialize_key_and_certificates` is called with both a certificate whose public key did not match the provided private key and an `encryption_algorithm` with `hmac_hash` set (via `Pri

CVE-2023-38325 [HIGH] CWE-295 CVE-2023-38325: The cryptography package before 41.0.2 for Python mishandles SSH certificates that have critical opt The cryptography package before 41.0.2 for Python mishandles SSH certificates that have critical options.

CVE-2016-9243 [HIGH] CVE-2016-9243: HKDF in cryptography before 1.5.2 returns an empty byte-string if used with a length less than algor HKDF in cryptography before 1.5.2 returns an empty byte-string if used with a length less than algorithm.digest_size.

CVE-2023-49083 [HIGH] CWE-476 CVE-2023-49083: cryptography is a package designed to expose cryptographic primitives and recipes to Python develope cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Calling `load_pem_pkcs7_certificates` or `load_der_pkcs7_certificates` could lead to a NULL-pointer dereference and segfault. Exploitation of this vulnerability poses a serious risk of Denial of Service (DoS) for any application attempting to deseri

CVE-2026-26007 [MEDIUM] CWE-345 CVE-2026-26007: cryptography is a package designed to expose cryptographic primitives and recipes to Python develope cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to 46.0.5, the public_key_from_numbers (or EllipticCurvePublicNumbers.public_key()), EllipticCurvePublicNumbers.public_key(), load_der_public_key() and load_pem_public_key() functions do not verify that the point belongs to the expected prim

CVE-2024-12797 [LOW] CWE-1395 Vulnerable OpenSSL included in cryptography wheels Vulnerable OpenSSL included in cryptography wheels pyca/cryptography's wheels include a statically linked copy of OpenSSL. The versions of OpenSSL included in cryptography 42.0.0-44.0.0 are vulnerable to a security issue. More details about the vulnerability itself can be found in https://openssl-library.org/news/secadv/20250211.txt. If you are building cryptography source ("sdist") then you are responsible for up

CVE-2023-23931 [MEDIUM] CWE-754 CVE-2023-23931: cryptography is a package designed to expose cryptographic primitives and recipes to Python develope cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In affected versions `Cipher.update_into` would accept Python objects which implement the buffer protocol, but provide only immutable buffers. This would allow immutable objects (such as `bytes`) to be mutated, thus violating fundamental rules of

CVE-2020-25659 [MEDIUM] CWE-385 CVE-2020-25659: python-cryptography 3.2 is vulnerable to Bleichenbacher timing attacks in the RSA decryption API, vi python-cryptography 3.2 is vulnerable to Bleichenbacher timing attacks in the RSA decryption API, via timed processing of valid PKCS#1 v1.5 ciphertext.

CVE-2026-34073 [MEDIUM] CWE-295 CVE-2026-34073: cryptography is a package designed to expose cryptographic primitives and recipes to Python develope cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to version 46.0.6, DNS name constraints were only validated against SANs within child certificates, and not the "peer name" presented during each validation. Consequently, cryptography would allow a peer named bar.example.com to validate aga

CVE-2024-0727 [MEDIUM] CWE-476 Null pointer dereference in PKCS12 parsing Null pointer dereference in PKCS12 parsing Issue summary: Processing a maliciously formatted PKCS12 file may lead OpenSSL to crash leading to a potential Denial of Service attack Impact summary: Applications loading files in the PKCS12 format from untrusted sources might terminate abruptly. A file in PKCS12 format can contain certificates and keys and may come from an untrusted source. The PKCS12 specification allows ce