#VU117535 Open redirect in koa - CVE-2025-62595
Published: October 22, 2025
Vulnerability identifier: #VU117535
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P/U:Clear
CVE-ID: CVE-2025-62595
CWE-ID: CWE-601
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
koa
koa
Software vendor:
Koa.js
Koa.js
Description
The vulnerability allows a remote attacker to redirect victims to arbitrary URL.
The vulnerability exists due to improper sanitization of user-supplied data in the Koa.js framework within its back redirect functionality. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.
Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.
Remediation
Install updates from vendor's website.