# CVE-2026-64644: Next.js: Denial of Service in the Image Optimization API using SVGs

> CVE-2026-64644: Next.js: Denial of Service in the Image Optimization API using SVGs. CVSS 5.3 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-64644
Last updated: 2026-10-24T13:10:00Z

- Published: 2026-07-27 17:54 UTC · Updated: 2026-10-24 13:10 UTC · Assigner: GitHub\_M
- CVSS: 5.3 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- EPSS: 0.67%, 52th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-407

## Description

Next.js is a React framework for building full-stack web applications. In versions 15.5.0 through 15.5.20 and 16.0.0 through 16.2.10, when self-hosting Next.js with the default image loader, the Image Optimization API can optimize remotely hosted images if configured (not enabled by default). If those images contain malicious content, they can cause CPU exhaustion in /\_next/image endpoints.Only config.images.remotePatterns is affected, and just the patterns in that array, whereas config.images.unoptimized: true, config.images.loader: 'custom', and Vercel are not impacted. This issue has been fixed in versions 15.5.21 and 16.2.11.

## Affected vendors and products

- vercel: next.js

## Tracked companies

- [Vercel](https://rewindex.com/company/vercel.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-64644)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-64644)
- [https://github.com/vercel/next.js/commit/93cb90891402fa4c47798d03cb9e05c13233766c](https://github.com/vercel/next.js/commit/93cb90891402fa4c47798d03cb9e05c13233766c)
- [https://github.com/vercel/next.js/pull/96006](https://github.com/vercel/next.js/pull/96006)
- [https://github.com/vercel/next.js/releases/tag/v15.5.21](https://github.com/vercel/next.js/releases/tag/v15.5.21)
- [https://github.com/vercel/next.js/releases/tag/v16.2.11](https://github.com/vercel/next.js/releases/tag/v16.2.11)
- [https://github.com/vercel/next.js/security/advisories/GHSA-q8wf-6r8g-63ch](https://github.com/vercel/next.js/security/advisories/GHSA-q8wf-6r8g-63ch)

---

_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


---
Canonical: https://rewindex.com/cve/CVE-2026-64644 · Markdown: https://rewindex.com/cve/CVE-2026-64644.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-64644 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:50:29.679Z