CVE-2026-111053
CVE-2026-111053 · FOSSBilling: Unauthenticated attacker can probe existence of arbitrary files via guest/system/template_exists
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
FOSSBilling is an open source billing and client-management platform. From 0.1.0 until 0.8.7, the unauthenticated api/guest/system/template_exists endpoint permits path traversal because templateExists uses Path::join on the attacker-controlled file parameter without rejecting .. sequences or verifying that the resolved path remains inside the active theme directory. The trigger is an unauthenticated request to guest/system/template_exists containing traversal sequences in the file parameter. An attacker can submit traversal sequences in the file parameter and observe the returned boolean to determine whether arbitrary files or directories exist on the server. The oracle does not disclose file contents. This issue is fixed in version 0.8.7.
CVSS 6.9 · Moyenne · EPSS 0,4%
- Publication
- Mise à jour
Produits et versions concernés
fossbilling
- Versions du logiciel
- >= 0.1.0, < 0.8.7: Concernée
Aucun correctif publié
Sources originales
- https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-fm3x-cx5r-wwgp
- https://github.com/FOSSBilling/FOSSBilling/pull/4221
- https://github.com/FOSSBilling/FOSSBilling/commit/e6ca7731c6bce406aba11900a4450e89c4ebdb01
- https://github.com/FOSSBilling/FOSSBilling/releases/tag/0.8.7
- https://nvd.nist.gov/vuln/detail/CVE-2026-111053