CVE-2026-34073
cryptography has incomplete DNS name constraint enforcement on peer names
5.3
MEDIUM
CVSS 3.1
EPSS 0.15%
描述
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Prior to version 46.0.6, DNS name constraints were only validated against SANs within child certificates, and not the "peer name" presented during each validation. Consequently, cryptography would allow a peer named bar.example.com to validate against a wildcard leaf certificate for *.example.com, even if the leaf's parent certificate (or upwards) contained an excluded subtree constraint for bar.example.com. This issue has been patched in version 46.0.6.
如何修補 CVE-2026-34073
要修補 CVE-2026-34073,請將受影響套件升級到下列已修補版本。
- —升級至 46.0.7-r0 或更新版本
- —未列出修補版本
- —升級至 46.0.6 或更新版本
- —升級至 46.0.6 或更新版本
CVE-2026-34073 正在被利用嗎?
低 — EPSS 為 0.2%,目前沒有觀察到大規模利用活動。
受影響套件(4)
- from 0, < 46.0.7-r0
- from 0
- from 0, < 46.0.6
- from 0, < 46.0.6
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U |
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |