CVE-2025-49826
HIGH7.5EPSS 0.17%Next.JS vulnerability can lead to DoS via cache poisoning
Published: 7/3/2025Modified: 7/3/2025
Also known as:GHSA-67rr-84xm-4c7r
Description
### 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 (1)
- npm/next>= 15.0.4-canary.51, < 15.1.8
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References (7)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2025-49826
- PATCHhttps://github.com/vercel/next.js
- WEBhttps://github.com/vercel/next.js/commit/16bfce64ef2157f2c1dfedcfdb7771bc63103fd2
- WEBhttps://github.com/vercel/next.js/commit/a15b974ed707d63ad4da5b74c1441f5b7b120e93
- WEBhttps://github.com/vercel/next.js/releases/tag/v15.1.8
- WEBhttps://github.com/vercel/next.js/security/advisories/GHSA-67rr-84xm-4c7r
- WEBhttps://vercel.com/changelog/cve-2025-49826