9.2

CVE-2025-25200

Koa has Inefficient Regular Expression Complexity

Koa is expressive middleware for Node.js using ES2017 async functions. Prior to versions 0.21.2, 1.7.1, 2.15.4, and 3.0.0-alpha.3, Koa uses an evil regex to parse the `X-Forwarded-Proto` and `X-Forwarded-Host` HTTP headers. This can be exploited to carry out a Denial-of-Service attack. Versions 0.21.2, 1.7.1, 2.15.4, and 3.0.0-alpha.3 fix the issue.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Koajs ≫ Koa SwPlatformnode.js Version < 0.21.2
Koajs ≫ Koa SwPlatformnode.js Version >= 1.0.0 < 1.7.1
Koajs ≫ Koa SwPlatformnode.js Version >= 2.0.0 < 2.15.4
Koajs ≫ Koa Version3.0.0 Updatealpha0 SwPlatformnode.js
Koajs ≫ Koa Version3.0.0 Updatealpha1 SwPlatformnode.js
Koajs ≫ Koa Version3.0.0 Updatealpha2 SwPlatformnode.js
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.77% 0.508
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
security-advisories@github.com 9.2 0 0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE-1333 Inefficient Regular Expression Complexity

The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles.

https://github.com/koajs/koa/blob/master/lib/request.js#L259
Product
https://github.com/koajs/koa/blob/master/lib/request.js#L404
Product
https://github.com/koajs/koa/commit/5054af6e31ffd451a4151a1fe144cef6e5d0d83c
Patch
https://github.com/koajs/koa/commit/5f294bb1c7c8d9c61904378d250439a321bffd32
Patch
https://github.com/koajs/koa/commit/93fe903fc966635a991bcf890cfc3427d33a1a08
Patch
https://github.com/koajs/koa/releases/tag/2.15.4
Release Notes
https://github.com/koajs/koa/security/advisories/GHSA-593f-38f6-jp5m
Vendor Advisory