CVE-2026-64643
1 advisory.
npm/next CVE-2026-64643: medium, EPSS 0.51%
Next.js: Unauthenticated disclosure of internal Server Function endpoints
Action: Upgrade next to 15.5.21 or later.
npm i next@15.5.21npm i next@16.2.11Affected
| introduced | fixed | last affected |
|---|---|---|
| 13.0.0 | 15.5.21 | - |
| 16.0.0 | 16.2.11 | - |
Fixed versions
| 15.5.21 | 16.2.11 |
Sources
- osv: GHSA-955p-x3mx-jcvp
- https://github.com/vercel/next.js/security/advisories/GHSA-955p-x3mx-jcvp
- https://github.com/vercel/next.js/commit/1b0c3ae912a3ad925c60065cc8d55b070fa8bcd3
- https://github.com/vercel/next.js/commit/ff12a6124e1504f17b62de948b8a553fdecaef7b
- https://github.com/vercel/next.js
- https://github.com/vercel/next.js/releases/tag/v15.5.21
- https://github.com/vercel/next.js/releases/tag/v16.2.11
CVE-2026-64643 · published · modified · JSON