CVE-2026-26278
fast-xml-parser affected by DoS through entity expansion in DOCTYPE (no expansion limit)
7.5
HIGH
CVSS 3.1
EPSS 0.81%
描述
fast-xml-parser allows users to validate XML, parse XML to JS object, or build XML from JS object without C/C++ based libraries and no callback. In versions 4.1.3 through 5.3.5, the XML parser can be forced to do an unlimited amount of entity expansion. With a very small XML input, it’s possible to make the parser spend seconds or even minutes processing a single request, effectively freezing the application. Version 5.3.6 fixes the issue. As a workaround, avoid using DOCTYPE parsing by `processEntities: false` option.
如何修補 CVE-2026-26278
要修補 CVE-2026-26278,請將受影響套件升級到下列已修補版本。
- —未列出修補版本
- —升級至 4.5.4 或更新版本
CVE-2026-26278 正在被利用嗎?
低 — EPSS 為 0.8%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0
- >= 4.1.3, < 4.5.4
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 |