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CVE-2025-25200

nvd nist
Published: Feb 12, 2025Modified: Jun 17, 2026

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9.2
Vector
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
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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:XShow less
Source: security-advisories@github.com (Secondary)

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.

Affected (6)

Products: Koajs: Koa
1 product
Koa
Configuration A
6 vulnerable
Vulnerable SoftwareAffected Versions
Koajs
Before 0.21.2
From 1.0.0 to 1.7.1
From 2.0.0 to 2.15.4
Version 3.0.0 alpha0
Version 3.0.0 alpha1
Version 3.0.0 alpha2

References (7)

Source: security-advisories@github.com
Product
Source: security-advisories@github.com
Product
Source: security-advisories@github.com
Release Notes
Source: security-advisories@github.com
Vendor Advisory

Timeline

No history available yet.