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.
Configurations

Configuration 1 (hide)

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

History

21 Jul 2026, 12:18

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:42644 -

10 Jul 2026, 12:16

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:37275 -

30 Jun 2026, 03:19

Type Values Removed Values Added
References
  • () 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-2026:7295 -
  • () 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 -
CWE CWE-131

15 Apr 2026, 16:12

Type Values Removed Values Added
First Time Cryptography.io cryptography
Cryptography.io
References () https://github.com/pyca/cryptography/security/advisories/GHSA-p423-j2cm-9vmq - () https://github.com/pyca/cryptography/security/advisories/GHSA-p423-j2cm-9vmq - Vendor Advisory
References () http://www.openwall.com/lists/oss-security/2026/04/08/12 - () http://www.openwall.com/lists/oss-security/2026/04/08/12 - Mailing List, Release Notes, Third Party Advisory
CPE cpe:2.3:a:cryptography.io:cryptography:*:*:*:*:*:python:*:*
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 9.8

08 Apr 2026, 22:16

Type Values Removed Values Added
References
  • () http://www.openwall.com/lists/oss-security/2026/04/08/12 -

08 Apr 2026, 21:17

Type Values Removed Values Added
New CVE

Information

Published : 2026-04-08 21:17

Updated : 2026-07-21 12:18


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