Vulnerability in Fossbilling
CVE-2026-28496
FOSSBilling is a free, open-source billing and client management system. Versions prior to 0.8.0 have a Server-Side Template Injection (SSTI) vulnerability in the template rendering system. Administrators with access to features that rende…
EPSS: 0.176 (96.8th percentile) — read the EPSS interpretation.
Affected products
- Fossbilling — versions < 0.8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-28496?
- CVE-2026-28496 is a vulnerability in Fossbilling, classified under Improper Neutralization of Special Elements Used in a Template Engine. Published 2026-06-23.
- Is CVE-2026-28496 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.