CVE-2026-107842
Contao: Protected page content is disclosed to anonymous visitors after contao.search.index_protected is disabled
Published Oct 9, 2026 · corrected/updated Oct 9, 2026 · evidence confidence high
decides whether to filter protected pages out of search results based on the current value of , but the authorisation data lives per row in . Turning the setting off removes the filter without removing the rows, so protected pages that were indexed while it was on are returned to unauthenticated visitors such as title, URL and context snippet, even though the pages themselves still answer 401. ## Impact Disclosure of member-only page titles, URLs and indexed text to unauthenticated visitors through the site search. The pages themselves remain access-controlled, so this is not a page-access bypass. ## Credits This security vulnerability was found by @iRevivalx .
Grounded briefings
Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.
Executive
CVE-2026-107842 is a medium public vulnerability record for this product. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.
System administrator
Identify whether this product is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: contao/core-bundle (4.0.0 → 5.3.50); contao/core-bundle (5.4.0-RC1 → 5.7.12). Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.
Security analyst
Signals on file: CVSS 5.3, EPSS 0.3%. It is not currently listed in the CISA Known Exploited catalog. Weakness classes: CWE-200. Sources contributing to this record: cve_org, epss, github, osv. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.
Exploitation and remediation
Exploitation evidence
Not listed as known exploited in CISA KEV. Not in the CISA KEV catalog.
Patch and remediation
No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.
Safe detection guidance
Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.
Code
The project this record applies to. Exploit listings stay in References.
Timeline
Detection, updates, and resolution for this record.
Oct 9, 2026 · Catalog
Detected
decides whether to filter protected pages out of search results based on the current value of , but the authorisation data lives per row in . Turning the setting off removes the filter without removing the rows, so protected pages that were indexed while it was on are returned to unauthenticated visitors such as title, URL and context snippet, even though the pages themselves still answer 401. ##
Oct 9, 2026 · Catalog
Fix available
Packagist contao/core-bundle 4.0.0 → 5.3.50
Oct 9, 2026 · Catalog
Fix available
Packagist contao/core-bundle 5.4.0-RC1 → 5.7.12
Oct 9, 2026 · GitHub Advisory Database
Fix available
contao/core-bundle fixed in 5.3.50; contao/core-bundle fixed in 5.7.12
Oct 9, 2026 · GitHub Advisory Database
Fix available
contao/core-bundle fixed in 5.3.50
Oct 9, 2026 · GitHub Advisory Database
Fix available
contao/core-bundle fixed in 5.7.12
Oct 9, 2026 · Catalog
Updated
decides whether to filter protected pages out of search results based on the current value of , but the authorisation data lives per row in . Turning the setting off removes the filter without removing the rows, so protected pages that were indexed while it was on are returned to unauthenticated visitors such as title, URL and context snippet, even though the pages themselves still answer 401. ##
Affected
- Packagist contao/core-bundle4.0.0 → 5.3.50
- Packagist contao/core-bundle5.4.0-RC1 → 5.7.12
Sources
- CVE.orgVulnerability recordCVE-2026-107842
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-107842
30-day exploitation probability 0.3%
first.org - GitHub Advisory DatabasePackage advisoryGHSA-x2rp-9qf7-2fmq
GitHub Advisory Database record mirrored by OSV.
github.com - OSV.devPackage advisoryGHSA-x2rp-9qf7-2fmq
Contao: Protected page content is disclosed to anonymous visitors after contao.search.index_protected is disabled
osv.dev