Open Redirect

Overview koa is a Koa web app framework Affected versions of this package are vulnerable to Open Redirect via the redirect function in lib/response.js due to improper input sanitization. An attacker can redirect users to arbitrary external sites by exploiting this vulnerability. Remediation A fix...

MAL-2025-40130 Malicious code in yakutsk-pyxis-polaris-koa (npm)

The package yakutsk-pyxis-polaris-koa was found to contain malicious code...

Open Redirect

Koa is vulnerable to Open Redirect. The vulnerability is due to improper validation of the Referrer argument in the back function of lib/response.js, which allows remote attackers to redirect users to malicious sites...

Open Redirect

Overview org.webjars.npm:koa is a Koa web app framework Affected versions of this package are vulnerable to Open Redirect via the back function in lib/response.js which uses the user-controllable referrer header as the redirect target. An attacker can redirect users to arbitrary external sites by...

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...

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...

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...

koa-remove-trailing-slashes 输入验证错误漏洞

koa-remove-trailing-slashes is an application. A Koa middleware that removes trailing slashes from paths. A security vulnerability exists in versions prior to koa-remove-trailing-slashes 2.0.2 that stems from vulnerability to Open Redirect...

DEBIAN-CVE-2016-10539

negotiator is an HTTP content negotiator for Node.js and is used by many modules and frameworks including Express and Koa. The header for "Accept-Language", when parsed by negotiator 0.6.0 and earlier is vulnerable to Regular Expression Denial of Service via a specially crafted string...

UBUNTU-CVE-2016-10539

negotiator is an HTTP content negotiator for Node.js and is used by many modules and frameworks including Express and Koa. The header for "Accept-Language", when parsed by negotiator 0.6.0 and earlier is vulnerable to Regular Expression Denial of Service via a specially crafted string...