CVE-2026-39892

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.
References
Link Resource
https://github.com/pyca/cryptography/security/advisories/GHSA-p423-j2cm-9vmq Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/04/08/12 Mailing List Release Notes Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:19375
https://access.redhat.com/errata/RHSA-2026:20338
https://access.redhat.com/errata/RHSA-2026:21017
https://access.redhat.com/errata/RHSA-2026:22465
https://access.redhat.com/errata/RHSA-2026:22629
https://access.redhat.com/errata/RHSA-2026:22840
https://access.redhat.com/errata/RHSA-2026:23361
https://access.redhat.com/errata/RHSA-2026:24483
https://access.redhat.com/errata/RHSA-2026:24761
https://access.redhat.com/errata/RHSA-2026:24762
https://access.redhat.com/errata/RHSA-2026:24853
https://access.redhat.com/errata/RHSA-2026:24866
https://access.redhat.com/errata/RHSA-2026:24977
https://access.redhat.com/errata/RHSA-2026:30088
https://access.redhat.com/errata/RHSA-2026:30089
https://access.redhat.com/errata/RHSA-2026:37275
https://access.redhat.com/errata/RHSA-2026:42644
https://access.redhat.com/errata/RHSA-2026:43651
https://access.redhat.com/errata/RHSA-2026:43670
https://access.redhat.com/errata/RHSA-2026:43851
https://access.redhat.com/errata/RHSA-2026:43853
https://access.redhat.com/errata/RHSA-2026:43854
https://access.redhat.com/errata/RHSA-2026:43855
https://access.redhat.com/errata/RHSA-2026:46956
https://access.redhat.com/errata/RHSA-2026:7295
https://access.redhat.com/security/cve/CVE-2026-39892
https://bugzilla.redhat.com/show_bug.cgi?id=2456735
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39892.json
Configurations

Configuration 1 (hide)

cpe:2.3:a:cryptography.io:cryptography:*:*:*:*:*:python:*:*

History

No history.

Information

Published : 2026-04-08 21:17

Updated : 2026-09-10 13:20


NVD link : CVE-2026-39892

Mitre link : CVE-2026-39892

CVE.ORG link : CVE-2026-39892


JSON object : View

Products Affected

cryptography.io

  • cryptography
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-131

Incorrect Calculation of Buffer Size