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NVD Vulnerability Details :
CVE-2026-39892
Analyzed
More InfoOfficial Page
Source-security-advisories@github.com
View Known Exploited Vulnerability (KEV) details
Published At-08 Apr, 2026 | 21:17
Updated At-15 Apr, 2026 | 16:12

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.06.9MEDIUM
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Type: Secondary
Version: 4.0
Base score: 6.9
Base severity: MEDIUM
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Primary
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CPE Matches
cryptography.io
cryptography.io
>>cryptography>>Versions from 45.0.0(inclusive) to 46.0.7(exclusive)
cpe:2.3:a:cryptography.io:cryptography:*:*:*:*:*:python:*:*
Weaknesses
CWE IDTypeSource
CWE-119Secondarysecurity-advisories@github.com
CWE ID: CWE-119
Type: Secondary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/pyca/cryptography/security/advisories/GHSA-p423-j2cm-9vmqsecurity-advisories@github.com
Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/04/08/12af854a3a-2127-422b-91ae-364da2661108
Mailing List
Release Notes
Third Party Advisory
Hyperlink: https://github.com/pyca/cryptography/security/advisories/GHSA-p423-j2cm-9vmq
Source: security-advisories@github.com
Resource:
Vendor Advisory
Hyperlink: http://www.openwall.com/lists/oss-security/2026/04/08/12
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Mailing List
Release Notes
Third Party Advisory
Change History
0Changes found
Details not found