SEPTEMBER 17, 2026
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Case File

CVE-2026-53640

LOW · CVSS 2.3 EPSS 0.23% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-06 · Last synced 2026-08-05

CyberRota Analysis

AI-Generated

Low-privileged staff accounts in FOSSBilling versions prior to 0.8.0 can access sensitive data through admin API endpoints that lack proper authorization checks, posing a risk of data exposure. Organizations using this billing and client management system should prioritize upgrading to version 0.8.0 or implementing workarounds, such as restricting access to sensitive endpoints via a reverse proxy or WAF, to mitigate potential data breaches. This vulnerability particularly affects environments with multiple staff accounts that may inadvertently access restricted information.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-53640
Severity
LOW
CVSS
2.3
EPSS
0.23%

Original NVD Description

FOSSBilling is a free, open-source billing and client management system. Prior to version 0.8.0, low-privileged staff accounts may read sensitive data via admin API endpoints that lack permission checks. While sibling write endpoints correctly enforce fine-grained permissions, the corresponding read endpoints have no authorization guards. Version 0.8.0 contains a fix. Some workarounds are available. Restrict staff accounts to only those who need access to sensitive data and/or use a reverse proxy or WAF to restrict access to the affected endpoints.