CVE-2026-39892

9.8 CRITICAL
Published: April 08, 2026 Modified: April 15, 2026
View on NVD

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/pyca/cryptography/security/advisories/GHSA-p423-j2cm-9vmq
Source: security-advisories@github.com
Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/04/08/12
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Release Notes Third Party Advisory

2 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
0.1%
19th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

cryptography.io