CVE-2026-39892
Cryptography vulnerable to buffer overflow if non-contiguous buffers were passed to APIs
9.8
CRITICAL
CVSS 3.1
EPSS 0.65%
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
Is CVE-2026-39892 being exploited?
Low — EPSS is 0.7%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 45.0.0, < 46.0.7-r0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| 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 |