5.9

CVE-2026-44577: vercel next.js

CVSS: 5.9v3.1MediumModified
AliasesGHSA-h64f-5h5j-jqjhCGA-9w4q-v9cm-hff3CGA-gg66-7h68-87v9
Published 13-05-2026Last modified 13-08-2026
Open JSON

Vulnerability summary

CVE-2026-44577 is a medium (CVSS 5.9) vulnerability in vercel next.js. EPSS estimates a 0.94% chance of exploitation in the next 30 days, higher than 60.6% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
5.9/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.94%
0%100%
Low · +0.20 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
CGA-8JFQ-2FF9-76FH

Timeline

  1. 13-05-2026
    PublishedVulnerability first disclosed.
  2. 13-08-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.94%

Chance of exploitation in the next 30 days

Percentile

61%

Versus all other CVEs

30-day change

+0.20 pp

From 0.74% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.94%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard4 products
  • cadence-webAll versions (No fix recorded)
  • commercial-chainloop-frontendAll versions (No fix recorded)
  • keep-ui< 0.51.0-r7
  • langfuse-fips-3.152All versions (No fix recorded)
Npm1 product
  • next≥ 10.0.0, < 15.5.16 | ≥ 16.0.0, < 16.2.5
Vercel1 product
  • next.js≥ 10.0.0, < 15.5.16 | ≥ 16.0.0, < 16.2.5

3 vendors · 6 products

References

13 links
Show all 13 references