CVE-2026-39892
Cryptography vulnerable to buffer overflow if non-contiguous buffers were passed to APIs
9.8
CRITICAL
CVSS 3.1
EPSS 0.02%
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.
How to fix CVE-2026-39892
To remediate CVE-2026-39892, upgrade the affected package to a fixed version below.
- —upgrade to 46.0.7-r0 or later
- —upgrade to 46.0.7-1 or later
- —upgrade to 46.0.7 or later
- —upgrade to 46.0.7 or later
Is CVE-2026-39892 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 46.0.7-r0
- from 0, < 46.0.7-1
- >= 45.0.0, < 46.0.7
- >= 45.0.0, < 46.0.7
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | 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 |
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |