CVE-2025-25200
CVE-2025-25200
9.2
CriticalPublished:
Last updated:
Source:security-advisories@github.com
Analyzed
Weakness (CWE)
CVSS Vector
v4.0- Attack Vector
- Network
- Attack Complexity
- Low
- Attack Requirements
- None
- Privileges Required
- None
- User Interaction
- None
- Confidentiality (Vulnerable)
- None
- Integrity (Vulnerable)
- None
- Availability (Vulnerable)
- High
- Confidentiality (Subsequent)
- None
- Integrity (Subsequent)
- None
- Availability (Subsequent)
- High
Description
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.
References
security-advisories@github.com
https://github.com/koajs/koa/blob/master/lib/request.js#L259security-advisories@github.com
https://github.com/koajs/koa/blob/master/lib/request.js#L404security-advisories@github.com
https://github.com/koajs/koa/commit/5054af6e31ffd451a4151a1fe144cef6e5d0d83csecurity-advisories@github.com
https://github.com/koajs/koa/commit/5f294bb1c7c8d9c61904378d250439a321bffd32security-advisories@github.com
https://github.com/koajs/koa/commit/93fe903fc966635a991bcf890cfc3427d33a1a08security-advisories@github.com
https://github.com/koajs/koa/releases/tag/2.15.4security-advisories@github.com
https://github.com/koajs/koa/security/advisories/GHSA-593f-38f6-jp5m