6.9

CVE-2021-37699: vercel next.js Open Redirect

CVSS: 6.9v3.1MediumModified
AliasesGHSA-vxf5-wxwp-m7g9
Published 11-08-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2021-37699 is a medium (CVSS 6.9) Open Redirect vulnerability in vercel next.js. EPSS estimates a 1.03% chance of exploitation in the next 30 days, higher than 63.2% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.9/10
010
Medium · v3.1 (CVE.org)
EPSS score
1.03%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-08-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

Next.js is an open source website development framework to be used with the React library. In affected versions specially encoded paths could be used when pages/_error.js was statically generated allowing an open redirect to occur to an external site. In general, this redirect does not directly harm users although can allow for phishing attacks by redirecting to an attacker's domain from a trusted domain. We recommend everyone to upgrade regardless of whether you can reproduce the issue or not. The issue has been patched in release 11.1.0.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.03%

Chance of exploitation in the next 30 days

Percentile

63%

Versus all other CVEs

30-day change

0.00 pp

From 1.03% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.03%

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

Npm1 product
  • next≥ 0.9.9, < 11.1.0
Vercel1 product
  • next.js< 11.1.0 | ≥ 10.0.5, ≤ 10.2.0 | ≥ 11.0.0, ≤ 11.0.1

2 vendors · 2 products

References

4 links