CVE-2026-77433
Published:November 10, 2026
Updated:November 10, 2026
In Kiwi TCMS version 16.1, the fix for CVE-2026-54724 (open redirect via unvalidated "next" parameter) in the account confirmation endpoint is incomplete. The validation uses "startswith("/")" to check if the redirect URL is local, but this is bypassed by protocol-relative URLs like "//evil.com" which start with "/" but redirect the browser to an external attacker-controlled domain. 16.1’s incomplete mitigation still allows protocol-relative destinations and earlier releases lack the mitigation.
Affected Packages
https://github.com/kiwitcms/Kiwi.git (GITHUB):
Affected version(s) >=v3.8.17-1 <v16.2 || >=v4.0.0 <v16.2 || >=v5.0 <v16.2 || >=v6.0 <v16.2 || >=v7.0 <v16.2 || >=v8.0 <v16.2 || >=v9.0 <v16.2 || >=v10.0 <v16.2 || >=v11.0 <v16.2 || >=v12.0 <v16.2 || >=v13.0 <v16.2 || >=v14.0 <v16.2 || >=v15.0 <v16.2 || >=v16.0 <v16.2Fix Suggestion:
Update to version v16.2Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
URL Redirection to Untrusted Site