GHSA-67rr-84xm-4c7r

Next.JS vulnerability can lead to DoS via cache poisoning

Source: GitHub Advisory Database (reviewed) High CVE-2025-49826

Packages

Ecosystem	Package	Affected	Fixed in
npm	next	>= 15.0.4-canary.51, < 15.1.8	15.1.8

Details

As written in the advisory (Markdown source, shown as plain text).

### Summary A vulnerability affecting Next.js has been addressed. It impacted versions 15.0.4 through 15.1.8 and involved a cache poisoning bug leading to a Denial of Service (DoS) condition. Under certain conditions, this issue may allow a HTTP 204 response to be cached for static pages, leading to the 204 response being served to all users attempting to access the page More details: [CVE-2025-49826](https://vercel.com/changelog/cve-2025-49826) ## Credits - Allam Rachid [zhero;](https://zhero-web-sec.github.io/research-and-things/) - Allam Yasser (inzo)

References

External links from the advisory. They lead to third-party sites.

https://github.com/vercel/next.js/security/advisories/GHSA-67rr-84xm-4c7r web
https://nvd.nist.gov/vuln/detail/CVE-2025-49826 advisory
https://github.com/vercel/next.js/commit/16bfce64ef2157f2c1dfedcfdb7771bc63103fd2 web
https://github.com/vercel/next.js/commit/a15b974ed707d63ad4da5b74c1441f5b7b120e93 web
https://github.com/vercel/next.js package
https://github.com/vercel/next.js/releases/tag/v15.1.8 web
https://vercel.com/changelog/cve-2025-49826 web