high7.5
CVE-2025-49826
Next.JS vulnerability can lead to DoS via cache poisoning
Impact
### 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)
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | next | >= 15.0.4-canary.51, < 15.1.8 | 15.1.8 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Vercel | Next.Js | after 15.0.4 before 15.1.8 Version 15.0.4 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/vercel/next.js/commit/a15b974ed707d63ad4da5b74c1441f5b7b120e93
- https://github.com/vercel/next.js/releases/tag/v15.1.8
- https://github.com/vercel/next.js/security/advisories/GHSA-67rr-84xm-4c7r
- https://vercel.com/changelog/cve-2025-49826
- https://github.com/advisories/GHSA-67rr-84xm-4c7r
- https://github.com/vercel/next.js/commit/16bfce64ef2157f2c1dfedcfdb7771bc63103fd2
- https://nvd.nist.gov/vuln/detail/CVE-2025-49826