Open Redirect Affecting koa package, versions *

Q: How to fix?

A fix was pushed into the master branch but not yet published.

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Snyk IDSNYK-JS-KOA-12143256
published22 Aug 2025
disclosed22 Aug 2025
creditUnknown

Report a new vulnerability Found a mistake?

Introduced: 22 Aug 2025

NewCWE-601 (opens in a new tab)

How to fix?

A fix was pushed into the master branch but not yet published.

Overview

koa is a Koa web app framework

Affected versions of this package are vulnerable to Open Redirect via the redirect function in lib/response.js due to improper input sanitization. An attacker can redirect users to arbitrary external sites by exploiting this vulnerability.

References

CVSS Base Scores

version 4.0

version 3.1

Attack Vector (AV)
Network
Attack Complexity (AC)
Low
Attack Requirements (AT)
None
Privileges Required (PR)
None
User Interaction (UI)
Active

Confidentiality (VC)
Low
Integrity (VI)
Low
Availability (VA)
None

Confidentiality (SC)
None
Integrity (SI)
None
Availability (SA)
None