GHSA-h64f-5h5j-jqjh · Severity: medium · Ecosystem: npm — Next.js has a Denial of Service in the Image Optimization API
Next.js is a React framework for building full-stack web applications. From 10.0.0 to before 15.5.16 and 16.2.5, when self-hosting Next.js with the default image loader, the Image Optimization API fetches local images entirely into memory without enforcing a maximum size limit. An attacker could cause out-of-memory conditions by requesting large local assets from the /_next/image endpoint that match the images.localPatterns configuration (by default, all patterns are allowed). This vulnerability is fixed in 15.5.16 and 16.2.5.
Conclusion & alert: CVE-2026-44577 is rated Low Risk (34.9/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.40%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
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 | 2026-06-15 | 0.01% | 0.40% | +0.38% |
| 2 | 2026-05-14 | — | 0.01% | — |
Full EPSS history (2 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.9 | 3.1 | MEDIUM |
|
2.2 | 3.6 | [email protected] |
GHSA-h64f-5h5j-jqjh · Severity: medium · Ecosystem: npm — Next.js has a Denial of Service in the Image Optimization API
| URL | Tags |
|---|---|
| https://github.com/vercel/next.js/security/advisories/GHSA-h64f-5h5j-jqjh | Mitigation Vendor Advisory |