CVE-2026-39892

CRITICAL

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 v3.1 Score

9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Published: 4/8/2026Modified: 4/15/2026

Related Intelligence (0)

No articles currently reference this CVE.

References (2)

https://github.com/pyca/cryptography/security/advisories/GHSA-p423-j2cm-9vmqVendor Advisoryhttp://www.openwall.com/lists/oss-security/2026/04/08/12Mailing ListRelease Notes