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Vulnerabilities CVE-2026-44577

CVE-2026-44577

Medium
Open
TLP:CLEAR

Next.js: Denial of Service in the Image Optimization API

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Description

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.

Details

CVSS Score
5.9
EPSS Score
0.72%

50.6th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Confidence
90%
Published
May 13, 2026
Last Modified
May 14, 2026
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