CVE-2025-43859
h11 accepts some malformed Chunked-Encoding bodies
9.1
CRITICAL
CVSS 3.1
EPSS 0.20%
描述
h11 is a Python implementation of HTTP/1.1. Prior to version 0.16.0, a leniency in h11's parsing of line terminators in chunked-coding message bodies can lead to request smuggling vulnerabilities under certain conditions. This issue has been patched in version 0.16.0. Since exploitation requires the combination of buggy h11 with a buggy (reverse) proxy, fixing either component is sufficient to mitigate this issue.
如何修補 CVE-2025-43859
要修補 CVE-2025-43859,請將受影響套件升級到下列已修補版本。
- —升級至 0.14.0-1.1~deb12u1 或更新版本
- —升級至 0.16.0 或更新版本
CVE-2025-43859 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(2)
- from 0, < 0.14.0-1.1~deb12u1
- from 0, < 0.16.0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |