CVE-2021-37699

Open Redirect in Next.js versions below 11.1.0

MEDIUM
6.1
CVSS Score
Published: August 11, 2021 at 11:15 PM UTC
Updated: June 17, 2026 at 04:01 AM UTC
1 product affected across 1 vendorNext.js

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Severity
MEDIUM6.1
Exploit prediction
EPSS 1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 11.1.010.0.5 ≤ v ≤ 10.2.011.0.0 ≤ v ≤ 11.0.1
Affected range stops below 11.1.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-601

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