CVE-2026-44577

high

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.

References

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44577.json

https://github.com/vercel/next.js/security/advisories/GHSA-h64f-5h5j-jqjh

https://bugzilla.redhat.com/show_bug.cgi?id=2477194

https://access.redhat.com/security/cve/CVE-2026-44577

https://access.redhat.com/errata/RHSA-2026:40974

https://access.redhat.com/errata/RHSA-2026:37272

https://access.redhat.com/errata/RHSA-2026:34608

Details

Source: Mitre, NVD

Published: 2026-05-13

Updated: 2026-07-16

Risk Information

CVSS v2

Base Score: 5.4

Vector: CVSS2#AV:N/AC:H/Au:N/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High

EPSS

EPSS: 0.00013