Description
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.
References (5)
Scores
CVSS v3
3.5
EPSS
0.0008
EPSS Percentile
24.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-601
Status
published
Products (3)
koajs/koa
3.0.0 (7 CPE variants)
koajs/koa
2.0.0 - 2.16.2
npm/koa
2.0.0 - 2.16.2npm
Published
Jul 25, 2025
Tracked Since
Feb 18, 2026