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Vulnerability · Published Oct 9, 2026 · Assigned by GitHub_M

CVE-2026-107842Contao: Protected page content is disclosed to anonymous visitors after contao.search.index_protected is disabled

Medium 5.3

In plain English

A medium-severity information exposure in contao from contao. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.3%top 81.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Contao is an Open Source CMS. From version 4.0.0 until 5.3.50 and 5.7.12, ModuleSearch can disclose protected page titles, URLs, and indexed context snippets to unauthenticated visitors when contao.search.index_protected is changed from enabled to disabled. Authorization metadata is stored per row in tl_search, but disabling the setting removes the protected-row filter without deleting rows indexed while protection was enabled. The protected pages continue to return an authorization response, so this issue exposes search metadata and indexed text rather than bypassing page access. This issue is fixed in versions 5.3.50 and 5.7.12.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Packagistcontao/core-bundle5.3.50GHSA-x2rp-9qf7-2fmq
Packagistcontao/core-bundle5.7.12GHSA-x2rp-9qf7-2fmq

Affected products (as reported)

VendorProductVersions
contao contao >= 4.0.0, < 5.3.50>= 5.4.0-RC1, < 5.7.12

Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References