CVSS 4.0
7.1 highCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:NCVE-2026-126662
Contao 4.0.0 before 5.3.54, 5.4.0 before 5.7.17, and 6.0.0 before 6.0.6 Filemount Bypass via Edit-Multiple
High (7.1) in contao contao.
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Contao 4.0.0 before 5.3.54, 5.4.0 before 5.7.17, and 6.0.0 before 6.0.6 contains an access control bypass vulnerability that allows filemount-restricted backend users to modify folders outside their filemount via the file manager Edit-Multiple operation. Attackers holding the protected or syncExclude field permission can submit outside folder paths in the IDS parameter to publish protected folders or exclude them from DBAFS synchronization, exposing files for public download.
Severity
CVSS 3.1
7.1 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N- CWE
- CWE-862 Missing Authorization
- OWASP Top 10
- A01:2025 Broken Access Control
- Published
- Assigned by
- VulnCheck (CNA)
- NVD analysis
- Not in the NVD yet
- Record from
- the CVE List, synced
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Affected
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| Contao | from 4.0.0 before 5.3.54 |
| Contao | from 5.4.0-RC1 before 5.7.17 |
| Contao | from 6.0.0-RC1 before 6.0.6 |
Attack patterns (CAPEC)
- CAPEC-665 Exploitation of Thunderbolt Protection Flaws Likelihood: Low · Severity: Very High
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.
References
- https://github.com/contao/contao/commit/c01898f99c5d5af50a227ee85f27270c5427f900
- https://github.com/contao/contao/commit/a104202df2b532bb64805a0856fc94bb0bddbb66
- https://github.com/contao/contao/commit/240e169441796bb703819ee0e22728708f946b70
- https://github.com/contao/contao/security/advisories/GHSA-9jfh-v443-w3fj
- https://github.com/contao/contao/releases/tag/5.3.54
- https://github.com/contao/contao/releases/tag/5.7.17
- https://github.com/contao/contao/releases/tag/6.0.6
- https://github.com/contao/contao/blob/5.3.53/core-bundle/contao/drivers/DC_Folder.php#L1716-L1720
- https://www.vulncheck.com/advisories/contao-4.0.0-before-5.3.54-5.4.0-before-5.7.17-and-6.0.0-before-6.0.6-filemount-bypass-via-edit-multiple