CVE-2025-8129
A vulnerability, which was classified as problematic, was found in KoaJS Koa up to 3.0.0.
Does this matter?
Lower severity and a low EPSS score (0.29%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 4.0
- 2.0 LOWCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.29% probability · 21th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-601
- Affected
- koajs/koa
- Source
- cna@vuldb.com
EPSS 0.3% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/koajs/koa/issues/1892Exploit, Issue Tracking, Patch, Vendor Advisory
- https://github.com/koajs/koa/issues/1892#issue-3213028583Exploit, Issue Tracking, Patch, Third Party Advisory, Vendor Advisory
- https://vuldb.com/?ctiid.317514Permissions Required, VDB Entry
- https://vuldb.com/?id.317514Third Party Advisory, VDB Entry
- https://vuldb.com/?submit.619741Third Party Advisory, VDB Entry
- https://github.com/koajs/koa/issues/1892Exploit, Issue Tracking, Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.