Answer in brief
CVE-2026-44577 records a Medium severity (CVSS 5.9) vulnerability in Next.js: Denial of Service in the Image Optimization API. The current sources do not mark it as known exploited. The current feed maps vercel/next.js (generic), next (npm), next (npm), next (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps vercel/next.js (generic), next (npm), next (npm), next (npm) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:vercel:next.js:*:*:*:*:*:node.js:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| vercel/next.jsgeneric | >= 10.0.0, < 15.5.16 || >= 16.0.0, < 16.2.5 | Not reported |
| nextnpm | >=16.0.0 <16.2.5 | 16.2.5 |
| nextnpm | >=16.0.0<16.2.5 | Not reported |
| nextnpm | >=10.0.0,<15.5.16 | 15.5.16 |
| nextnpm | >=10.0.0 <15.5.16 | 15.5.16 |
| nextnpm | >=16.0.0,<16.2.5 | 16.2.5 |
| nextnpm | >=10.0.0<15.5.16 | Not reported |
Published upstream
May 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 3, 2026
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.
Quoted source text, attributed separately from HOL analysis.