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.
History

Fri, 10 Apr 2026 04:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 10 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-131
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

threat_severity

Moderate


Thu, 09 Apr 2026 08:30:00 +0000

Type Values Removed Values Added
First Time appeared Pyca
Pyca cryptography
Vendors & Products Pyca
Pyca cryptography

Wed, 08 Apr 2026 22:30:00 +0000

Type Values Removed Values Added
References

Wed, 08 Apr 2026 21:15:00 +0000

Type Values Removed Values Added
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.
Title cryptography has a buffer overflow if non-contiguous buffers were passed to APIs
Weaknesses CWE-119
References
Metrics cvssV4_0

{'score': 6.9, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-04-08T20:49:41.967Z

Updated: 2026-04-09T19:52:22.602Z

Reserved: 2026-04-07T20:32:03.011Z

Link: CVE-2026-39892

cve-icon Vulnrichment

Updated: 2026-04-08T21:16:07.164Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-04-08T21:17:01.547

Modified: 2026-04-08T22:16:21.907

Link: CVE-2026-39892

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-04-08T20:49:41Z

Links: CVE-2026-39892 - Bugzilla