CVE-2025-32379 XSS at ctx.redirect() function in Koajs

Koa is expressive middleware for Node.js using ES2017 async functions. In koa 2.16.1 and 3.0.0-alpha.5, passing untrusted user input to ctx.redirect even after sanitizing it, may execute javascript code on the user who use the app. This issue is patched in 2.16.1 and 3.0.0-alpha.5...

CVE-2025-32379 XSS at ctx.redirect() function in Koajs

Koa is expressive middleware for Node.js using ES2017 async functions. In koa 2.16.1 and 3.0.0-alpha.5, passing untrusted user input to ctx.redirect even after sanitizing it, may execute javascript code on the user who use the app. This issue is patched in 2.16.1 and 3.0.0-alpha.5...

CVE-2025-32379

CVE-2025-32379 (Koa, Node.js): In koa < 2.16.1 and

CVE-2025-32379 XSS at ctx.redirect() function in Koajs

Koa is expressive middleware for Node.js using ES2017 async functions. In koa 2.16.1 and 3.0.0-alpha.5, passing untrusted user input to ctx.redirect even after sanitizing it, may execute javascript code on the user who use the app. This issue is patched in 2.16.1 and 3.0.0-alpha.5...

@0xyy/elpis (>=1.0.0, <=1.0.2), @10xsai/cloudflare-router-nx-plugin (1.0.0) +1453 more potentially affected by CVE-2025-32379 via koa (>=2.0.0, <=2.16.0)

koa NPM version =2.0.0, =1.0.0, =1.0.0, =1.0.0, =1.0.0, =1.0.0, =5.0.0-alpha.1, =5.0.0-alpha.1, =5.0.0-alpha.1, =5.0.0-alpha.1, =5.0.0-alpha.1, =5.1.3 - @ahua0920/elpis 1.0.0 and more Source cves: CVE-2025-32379 Source advisory: OSV:GHSA-X2RG-Q646-7M2V...

Cross-site Scripting (XSS)

Overview org.webjars.npm:koa is a Koa web app framework Affected versions of this package are vulnerable to Cross-site Scripting XSS via the ctx.redirect function. An attacker can execute scripts on the user's browser or redirect users to malicious sites by supplying malicious input as an achor...

PT-2025-15755

Name of the Vulnerable Software and Affected Versions: Koa versions prior to 2.16.1 Koa versions prior to 3.0.0-alpha.5 Description: The issue arises when passing untrusted user input to ctx.redirect, which can execute JavaScript code on the user's device, even after sanitizing the input...

CVE-2025-32379: Improper Neutralization of Input During Web Page Generation

Koa is expressive middleware for Node.js using ES2017 async functions. In koa 2.16.1 and 3.0.0-alpha.5, passing untrusted user input to ctx.redirect even after sanitizing it, may execute javascript code on the user who use the app. This issue is patched in 2.16.1 and 3.0.0-alpha.5...

Koa 跨站脚本漏洞

Koa is an open source middleware for Koa.js. A cross-site scripting vulnerability exists in Koa versions prior to 2.16.1 and 3.0.0-alpha.5, which stems from the fact that passing untrusted user input to ctx.redirect may result in the execution of javascript code...

Denial Of Service (DoS)

Koa is vulnerable to Denial of Service. The vulnerability is due to inefficient regular expression processing due to the use of an overly complex regex to parse the X-Forwarded-Proto and X-Forwarded-Host HTTP headers, which can be exploited to cause excessive resource consumption...

CVE-2025-25200

A denial of service flaw was found in the koa library. An improperly designed regex is used to parse some specific HTTP headers. If untrusted requests are passed to koa, it can cause excessive resource usage on the server...

@oberd/olive-middleware-koa (>=1.2.7, <=1.3.2), @ysdn/admin (>=1.0.0, <=1.0.2) +211 more potentially affected by CVE-2025-25200 via koa (>=0.0.1, <=0.21.0)

koa NPM version =0.0.1, =1.2.7, =1.0.0, =0.1.0, =0.1.3, =0.0.2, =2.0.0, =0.0.0, =0.0.0, =0.0.1, =0.0.17 and more Source cves: CVE-2025-25200 Source advisory: OSV:GHSA-593F-38F6-JP5M...

@0xyy/elpis (>=1.0.0, <=1.0.2), @1234wu/elpis (>=1.0.0, <=1.0.4) +1408 more potentially affected by CVE-2025-25200 via koa (>=2.0.0, <=2.15.3)

koa NPM version =2.0.0, =1.0.0, =1.0.0, =1.0.0, =1.0.0, =1.0.0, =5.0.0-alpha.1, =5.0.0-alpha.1, =5.0.0-alpha.1, =5.0.0-alpha.1, =5.0.0-alpha.1, =1.0.0, =1.1.0 and more Source cves: CVE-2025-25200 Source advisory: OSV:GHSA-593F-38F6-JP5M...

GHSA-593F-38F6-JP5M Inefficient Regular Expression Complexity in koa

Summary 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. PoC Coming soon. Impact This is a Regex Denial-of-Service attack and causes memory exhaustion. The regex should be improved and empty...

91jin (>=0.1.7, <=0.1.8), @aftonbladet/roc-package-web-app-gaea (>=0.1.0, <=0.4.1) +147 more potentially affected by CVE-2025-25200 via koa (>=1.0.0, <=1.7.0)

koa NPM version =1.0.0, =0.1.7, =0.1.0, =2.4.1, =0.0.2, =0.0.1, =0.1.0, =0.4.11, =0.1.0, =0.0.2, =1.2.1 and more Source cves: CVE-2025-25200 Source advisory: OSV:GHSA-593F-38F6-JP5M...

Inefficient Regular Expression Complexity in koa

Summary 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. PoC Coming soon. Impact This is a Regex Denial-of-Service attack and causes memory exhaustion. The regex should be improved and empty...

Regular Expression Denial of Service (ReDoS)

Overview org.webjars.npm:koa is a Koa web app framework Affected versions of this package are vulnerable to Regular Expression Denial of Service ReDoS via the parsing of X-Forwarded-Proto and X-Forwarded-Host HTTP headers. Details Denial of Service DoS describes a family of attacks, all aimed at...

CVE-2025-25200

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....

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....

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....