CVE-2025-8129CWE-601

KoaJS Koa HTTP Header response.js back redirect

Medium · published July 25, 2025

CVSS v4.0
5.1
EPSS
0%
Percentile
17.5
In the wild
Unconfirmed
What it is

A vulnerability, which was classified as problematic, was found in KoaJS Koa up to 3.0.0. Affected is the function back in the library lib/response.js of the component HTTP Header Handler. The manipulation of the argument Referrer leads to open redirect. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

The record
Technical detail
CVSS v4.0
5.1 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
EPSS
0.00265 · 17.5th percentile
Weakness
CWE-601 · URL Redirection to Untrusted Site ('Open Redirect')
Published
2025-07-25T04:02Z
EPSS history
Timeline
  • 25 JUL 04:02Z
    KoaJS Koa HTTP Header response.js back redirect
    cvelistv5