CVE-2026-107848
LOW
CVSS 3.5
Published: 2026-10-09
Modified: 2026-10-09
Tenable Plugin
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Threat Intelligence Pending
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Description
Contao is an Open Source CMS. From version 4.0.0 until 5.3.50 and 5.7.12, RequestTokenListener validates REQUEST_TOKEN only for POST requests, while the declarative GET guard runs only when an act parameter is present. Backend actions dispatched through the key parameter can therefore execute without a CSRF token when an authenticated backend user loads an attacker-controlled URL. Reachable actions remain limited to modules available to that user, and the advisory demonstrates destructive or state-changing actions rather than privilege escalation. This issue is fixed in versions 5.3.50 and 5.7.12.
Quick Facts
| CVE ID | CVE-2026-107848 |
| CVSS Score | 3.5 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N |
| Published | 2026-10-09 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |