CVE-2025-8129

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 v3.1 Score

3.5

LOW

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

Weakness Type (CWE)

CWE-601 CWE-601

Affected Products

Vendor	Product	Versions
koajs	koa	2.0.0 — 2.16.2
koajs	koa	All
koajs	koa	All
koajs	koa	All
koajs	koa	All
koajs	koa	All
koajs	koa	All
koajs	koa	All

References

Advisories & Patches

https://github.com/koajs/koa/issues/1892 https://github.com/koajs/koa/issues/1892#issue-3213028583 https://github.com/koajs/koa/issues/1892

Exploits

https://github.com/koajs/koa/issues/1892 https://github.com/koajs/koa/issues/1892#issue-3213028583 https://github.com/koajs/koa/issues/1892

Other References

https://vuldb.com/?ctiid.317514 https://vuldb.com/?id.317514 https://vuldb.com/?submit.619741

Frequently Asked Questions

What is CVE-2025-8129? +

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. It has a CVSS v3.1 base score of 3.5 (LOW).

How severe is CVE-2025-8129? +

CVE-2025-8129 has a CVSS v3.1 score of 3.5 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2025-8129? +

CVE-2025-8129 affects products from koajs, specifically: koa. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-8129? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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