FOSSBilling before 0.8.9 Login CSRF via Staff Guest Login API
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 0.8.9
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
FOSSBilling, a open-source billing and client management application, is affected by a login cross-site request forgery flaw in its staff guest login API. An attacker can trick a victim's browser into silently logging into the attacker's staff account, potentially causing the victim to unknowingly act within the attacker's account.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
FOSSBilling before 0.8.9 contains a Cross-Site Request Forgery vulnerability in the staff guest login endpoint (POST /api/guest/staff/login) that allows remote attackers to force authentication because checkGuestClientAuthentication() only allowlists client_login and client_create, leaving staff_login without CSRF or Origin validation. Attackers can host an auto-submitting HTML form with attacker-controlled credentials to silently log a victim's browser into the attacker's staff account.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- FOSSBilling FOSSBilling
From 0.1.0 · fixed in 0.8.9