CVE-2026-42561
python-multipart has Denial of Service via unbounded multipart part headers
7.5
HIGH
CVSS 3.1
EPSS 0.55%
描述
Python-Multipart is a streaming multipart parser for Python. Prior to 0.0.27, python-multipart has a denial of service vulnerability in multipart part header parsing. When parsing multipart/form-data, MultipartParser previously had no limit on the number of part headers or the size of an individual part header. An attacker could send a request with either many repeated headers without terminating the header block or a single very large header value, causing excessive CPU work before request rejection or completion. This vulnerability is fixed in 0.0.27.
如何修補 CVE-2026-42561
要修補 CVE-2026-42561,請將受影響套件升級到下列已修補版本。
- —升級至 0.0.27 或更新版本
- —升級至 0.0.27 或更新版本
CVE-2026-42561 正在被利用嗎?
低 — EPSS 為 0.5%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 0.0.27
- from 0, < 0.0.27
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |