CVE-2026-39892
unknown
CVSS v3
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CVSS v4 NEW
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VIR risk
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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
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Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 0 |
| sid | Fixed | 46.0.7-1 |
| forky | Fixed | 46.0.7-1 |
| bullseye | Fixed | 0 |
| bookworm | 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
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.