{"id":"CVE-2026-112374","aliases":[],"cve":{"records":[{"id":"CVE-2026-112374","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-19T16:11:44.247Z","published":"2026-10-30T12:10:37.508Z","modified":"2026-10-30T12:10:37.508Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-30T12:10:37.508Z"}],"references":[{"url":"https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-h7w3-wp25-gf86","tags":["vendor-advisory","technical-description"],"source":"VulnCheck"},{"url":"https://github.com/FOSSBilling/FOSSBilling/releases/tag/0.8.9","tags":["patch","issue-tracking"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/fossbilling-before-login-csrf-via-staff-guest-login-api","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-352","description":"Cross-Site Request Forgery (CSRF)","source":"VulnCheck"}],"applicability":[{"source":"VulnCheck","statements":[{"operator":"OR","nodes":[{"operator":"OR","cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:fossbilling:fossbilling:-:*:*:*:*:*:*:*","versionStartIncluding":"0.1.0","versionEndExcluding":"0.8.9"}]}]}]}],"prioritization":[]},"title":"FOSSBilling before 0.8.9 Login CSRF via Staff Guest Login API","titleSource":"VulnCheck","descriptionSource":"VulnCheck","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account.","score":5.1,"severity":"medium","published":"2026-10-30T12:10:37.508Z","modified":"2026-10-30T12:10:37.508Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"FOSSBilling","name":"FOSSBilling","platforms":[],"versions":[{"version":"0.1.0","status":"affected","lessThan":"0.8.9","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:github/FOSSBilling/FOSSBilling","cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-112374"}],"remediation":[],"references":["https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-h7w3-wp25-gf86","https://github.com/FOSSBilling/FOSSBilling/releases/tag/0.8.9","https://www.vulncheck.com/advisories/fossbilling-before-login-csrf-via-staff-guest-login-api"],"sources":[{"name":"CVE","id":"CVE-2026-112374","modified":"2026-10-30T12:10:37.508Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-112374"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","score":5.1},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","score":4.3}],"sourceAffected":[],"observedAt":"2026-10-30T12:30:57.607Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T02:05:32.990Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":null}