koajs/koa · Security
Koajs vulnerable to Cross-Site Scripting (XSS) at ctx.redirect() function
- GHSA ID
- GHSA-x2rg-q646-7m2v
- CVE ID
- CVE-2025-32379
- Severity
- medium
- Published
- Updated
- CVSS
- 5 · CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
- CVSS v3
- 5 · CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
Description
Summary
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.
Patches
This issue is patched in 2.16.1 and 3.0.0-alpha.5.
PoC
Coming soon...
Impact
- Redirect user to another phishing site
- Make request to another endpoint of the application based on user's cookie
- Steal user's cookie
CWEs
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')