CVE-2026-39892mediumCWE-119CWE-131

CVE-2026-39892: fallo de gravedad media en pyca cryptography

cryptography has a buffer overflow if non-contiguous buffers were passed to APIs

Publicada el · Actualizada el

Seguir esta CVE+ Monitorear cryptography+ Monitorear cryptography

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

13Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 6.9epss 0.7%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Productos afectados
pyca · cryptography
CVEs relacionadas — pyca cryptography

En el mismo producto, de las más peligrosas a las menos.

CVE-2023-23931MEDIUMCipher.update_into can corrupt memory in pyca cryptographyEPSS 1.3%CVE-2023-49083MEDIUMcryptography vulnerable to NULL-dereference when loading PKCS7 certificatesEPSS 1.0%CVE-2024-26130HIGHcryptography NULL pointer deference with pkcs12.serialize_key_and_certificates when called with a non-matching certificate and private key and an hmac_hash overrideEPSS 0.8%CVE-2026-26007HIGHcryptography Subgroup Attack Due to Missing Subgroup Validation for SECT CurvesEPSS 0.4%CVE-2026-69247HIGHcryptography: PKCS#7 EnvelopedData decryption exposes a Bleichenbacher oracle through distinguishable errors and timingEPSS 0.3%CVE-2026-69249HIGHpython-cryptography: Duplicate self-signed intermediates can cause exponential path-buildingEPSS 0.3%