8.3

CVE-2026-64645: vercel next.js Open Redirect

CVSS: 8.3v4.0HighAnalyzed
AliasesCGA-2mf2-2xp4-q9vmCGA-6ghx-6rxg-6xhgCGA-ccrh-r4g7-xxx3
Published 27-07-2026Last modified 28-07-2026
Open JSON

Vulnerability summary

CVE-2026-64645 is a high (CVSS 8.3) Open Redirect vulnerability in vercel next.js. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 34.2% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.3/10
010
High · v4.0 (CVE.org)
EPSS score
0.41%
0%100%
Low · -0.42 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-Q6JQ-FGC8-9Q59

Timeline

  1. 27-07-2026
    PublishedVulnerability first disclosed.
  2. 28-07-2026
    Last modifiedVulnerability information updated.

Description

Next.js is a React framework for building full-stack web applications. In versions 12.0.0 through 15.5.20 and 16.0.0 through 16.2.10, a rewrites() or redirects() rule that builds its external destination hostname from request-controlled input can be pointed at an arbitrary hostname, regardless of the rule's hostname suffix. For a rewrite, Next.js proxies the request to that arbitrary host and serves the response from the application's origin, leading to Server-Side Request forgery. A redirects() rule configured this way is vulnerable to an Open Redirect. This issue has been fixed in versions 15.5.21 and 16.2.11.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

0.41%

Chance of exploitation in the next 30 days

Percentile

34%

Versus all other CVEs

30-day change

-0.42 pp

From 0.84% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.41%

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

Chainguard14 products
  • cadence-webAll versions (No fix recorded)
  • commercial-chainloop-frontendAll versions (No fix recorded)
  • homepage< 1.13.2-r8 | < 1.13.2-r9
  • jitsucom-jitsu-console< 2.11.0-r30
  • keep-ui< 0.54.2-r1
Wolfi4 products
  • jitsucom-jitsu-console< 2.11.0-r30
  • langfuse-3< 3.224.1-r0
  • langfuse-3-compat< 3.225.7-r6
  • langfuse-3-worker< 3.224.1-r0
Npm1 product
  • next≥ 12.0.0, < 15.5.21 | ≥ 16.0.0, < 16.2.11
Vercel1 product
  • next.js≥ 12.0.0 < 15.5.21 (No fix recorded) | ≥ 12.0.0, < 15.5.21 | ≥ 16.0.0, < 16.2.11

4 vendors · 20 products

References

8 links