CVE-2026-43924 Detail
Received
This CVE record has recently been published to the CVE List and has been included within the NVD dataset. DescriptionFOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, the Redirect module does not validate the URL scheme of administrator-configured destination URLs before storing or issuing redirects. This allows arbitrary external URLs to be configured as redirect targets, creating an open redirect vulnerability exploitable for phishing attacks. Users following a legitimate FOSSBilling URL can be silently redirected to an attacker-controlled external site. The redirect is issued as a 301 (Moved Permanently) response, which browsers cache persistently, amplifying the impact. Exploitation requires administrator privileges to create or modify redirect entries, limiting practical attack scenarios to multi-admin environments or compromised admin accounts. Version 0.8.0 fixes the issue. Some workarounds are available. Restrict admin access to the Redirect module to trusted administrators only and/or audit existing redirect entries in the database (the `extension_meta` table with `extension = 'mod_redirect'`) for any unexpected or external target URLs. Metrics
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CVSS 4.0 Severity and Vector Strings:
CNA: GitHub, Inc.
CVSS-B 4.8 MEDIUM
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N
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Weakness Enumeration
Quick InfoCVE Dictionary Entry:CVE-2026-43924 NVD Published Date: 06/03/2026 NVD Last Modified: 06/03/2026 Source: GitHub, Inc. |
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