GHSA-7gfc-8cq8-jh5f · Severity: high · Ecosystem: npm — Next.js authorization bypass vulnerability
Next.js is a React framework for building full-stack web applications. In affected versions if a Next.js application is performing authorization in middleware based on pathname, it was possible for this authorization to be bypassed for pages directly under the application's root directory. For example: * [Not affected] `https://example.com/` * [Affected] `https://example.com/foo` * [Not affected] `https://example.com/foo/bar`. This issue is patched in Next.js `14.2.15` and later. If your Next.js application is hosted on Vercel, this vulnerability has been automatically mitigated, regardless of Next.js version. There are no official workarounds for this vulnerability.
Conclusion & alert: CVE-2024-51479 is rated High Risk (67.5/100): CVSS High severity, with high exploitation likelihood (EPSS 78.51%, 99th percentile). Core evidence: EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +2.82% over the last day, indicating growing attacker interest. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-20 | 75.69% | 78.51% | +2.82% |
| 2 | 2026-05-19 | 71.55% | 75.69% | +4.14% |
| 3 | 2026-05-08 | — | 71.55% | — |
Full EPSS history (39 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
GHSA-7gfc-8cq8-jh5f · Severity: high · Ecosystem: npm — Next.js authorization bypass vulnerability
| vendor | priority | summary | link |
|---|---|---|---|
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2024-51479 |
| URL | Tags |
|---|---|
| https://github.com/vercel/next.js/releases/tag/v14.2.15 | Release Notes |
| https://github.com/vercel/next.js/security/advisories/GHSA-7gfc-8cq8-jh5f | Vendor Advisory |