Open Source CMS Contao Vulnerability in ModuleSearch Settings
CVE-2026-107842

5.3MEDIUM

Key Information:

Vendor

Contao

Status
Contao
Vendor
CVE Published:
9 October 2026

What is CVE-2026-107842?

A vulnerability exists in Contao CMS where the ModuleSearch functionality can inadvertently expose protected page titles, URLs, and indexed snippets to unauthenticated users. This issue arises when the setting 'contao.search.index_protected' is disabled, allowing previously protected search metadata to be accessible, although page access remains restricted. The problem lies in the treatment of authorization metadata, which isn't adequately removed, resulting in unauthorized data visibility. Versions 5.3.50 and 5.7.12 resolve this vulnerability.

Affected Version(s)

contao >= 4.0.0, < 5.3.50 < 4.0.0, 5.3.50

contao >= 5.4.0-RC1, < 5.7.12 < 5.4.0-RC1, 5.7.12

References

https://github.com/contao/contao/security/advisories/GHSA...
x_refsource_CONFIRM
https://github.com/contao/contao/commit/572686a113bca60f9...
x_refsource_MISC
https://github.com/contao/contao/releases/tag/5.3.50
x_refsource_MISC

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.