Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 8.2 | High | 4.0 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0086, the 58th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 21 Jul 2026, 16:02 UTC Published by the maintainers as a GitHub repository advisory
Sources
- GitHub Advisory Database: GHSA-m99w-x7hq-7vfj
- OSV: GHSA-m99w-x7hq-7vfj
- github.com/vercel/next.js/security/advisories/GHSA-m99w-x7hq-7vfj
- github.com/vercel/next.js/pull/96013
- github.com/vercel/next.js/commit/019628571641dec57aaf349ba0c360e3964e6f12
- github.com/vercel/next.js
- github.com/vercel/next.js/releases/tag/v15.5.21
- github.com/vercel/next.js/releases/tag/v16.2.11