Cryptography
by pyca
Source repositories
CVEs (14)
| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2026-39892 | Cri | 0.57 | 9.8 | 0.01 | Apr 8, 2026 | 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… | ||
| CVE-2020-36242 | Cri | 0.53 | 9.1 | 0.07 | Feb 7, 2021 | 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-2026-69249 | Hig | 0.50 | — | 0.00 | Aug 3, 2026 | python-cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In versions 42.0.0 through 48.0.0, when resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively… | ||
| CVE-2023-50782 | Hig | 0.49 | 7.5 | 0.01 | Feb 5, 2024 | 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-2026-69247 | Hig | 0.46 | — | 0.00 | Aug 3, 2026 | cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. From 44.0.0 until 50.0.0, pkcs7_decrypt_der, pkcs7_decrypt_pem, and pkcs7_decrypt_smime reported the outcome of decrypting a RecipientInfo's encryptedKey in several… | ||
| CVE-2024-26130 | Hig | 0.42 | 7.5 | 0.01 | Feb 21, 2024 | 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… | ||
| CVE-2023-38325 | Hig | 0.42 | 7.5 | 0.01 | Jul 14, 2023 | The cryptography package before 41.0.2 for Python mishandles SSH certificates that have critical options. | ||
| CVE-2016-9243 | Hig | 0.42 | 7.5 | 0.03 | Mar 27, 2017 | HKDF in cryptography before 1.5.2 returns an empty byte-string if used with a length less than algorithm.digest_size. | ||
| CVE-2026-69248 | Med | 0.38 | — | 0.00 | Aug 3, 2026 | cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In versions 45.0.0 through 48.0.0, if an intermediate constrained CA permits the DNS name foo.example.com, and the leaf certificate has a wildcard in its DNS SAN of… | ||
| CVE-2026-26007 | Med | 0.35 | 6.5 | 0.00 | Feb 10, 2026 | 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… | ||
| CVE-2020-25659 | Med | 0.32 | 5.9 | 0.02 | Jan 11, 2021 | 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-2023-49083 | Med | 0.31 | 5.9 | 0.01 | Nov 29, 2023 | 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… | ||
| CVE-2026-34073 | Med | 0.27 | 5.3 | 0.00 | Mar 31, 2026 | 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.… | ||
| CVE-2023-23931 | Med | 0.24 | 4.8 | 0.01 | Feb 7, 2023 | 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… |
- risk 0.57cvss 9.8epss 0.01
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…
- risk 0.53cvss 9.1epss 0.07
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.
- risk 0.50cvss —epss 0.00
python-cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In versions 42.0.0 through 48.0.0, when resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively…
- risk 0.49cvss 7.5epss 0.01
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.
- risk 0.46cvss —epss 0.00
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. From 44.0.0 until 50.0.0, pkcs7_decrypt_der, pkcs7_decrypt_pem, and pkcs7_decrypt_smime reported the outcome of decrypting a RecipientInfo's encryptedKey in several…
- risk 0.42cvss 7.5epss 0.01
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…
- risk 0.42cvss 7.5epss 0.01
The cryptography package before 41.0.2 for Python mishandles SSH certificates that have critical options.
- risk 0.42cvss 7.5epss 0.03
HKDF in cryptography before 1.5.2 returns an empty byte-string if used with a length less than algorithm.digest_size.
- risk 0.38cvss —epss 0.00
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In versions 45.0.0 through 48.0.0, if an intermediate constrained CA permits the DNS name foo.example.com, and the leaf certificate has a wildcard in its DNS SAN of…
- risk 0.35cvss 6.5epss 0.00
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…
- risk 0.32cvss 5.9epss 0.02
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.
- risk 0.31cvss 5.9epss 0.01
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…
- risk 0.27cvss 5.3epss 0.00
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.…
- risk 0.24cvss 4.8epss 0.01
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…