CVE-2026-39892
unknown
CVSS v3
—
CVSS v2
—
VIR risk
—
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.
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-39892
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-39892.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 0 |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 46.0.7-1 |
| debian | sid | fixed | 46.0.7-1 |
| debian | trixie | fixed | 0 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| PyPI | cryptography | >=45.0.0,<46.0.7 | 46.0.7 |
References
- https://github.com/pyca/cryptography/security/advisories/GHSA-p423-j2cm-9vmq
- https://nvd.nist.gov/vuln/detail/CVE-2026-39892
- https://github.com/pyca/cryptography
- http://www.openwall.com/lists/oss-security/2026/04/08/12
- https://www.suse.com/security/cve/CVE-2026-39892.html
- https://security-tracker.debian.org/tracker/CVE-2026-39892
Verify integrity in audit chain (admin only). AS-IS.