CVE-2026-107842 Contao: Protected page content is disclosed to anonymous visitors after contao.search.index_protected is disabled
Disabling protected page indexing in Contao CMS leaks protected page titles and snippets to anonymous users via search results.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-107842?
CVE-2026-107842 is a medium-severity vulnerability in contao, published on 9 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-200
Which versions are affected by CVE-2026-107842?
4 open source packages ship an affected version, including contao/core-bundle.
| Package | Affected | Fixed in |
|---|---|---|
contao/core-bundle Packagist | From 4.0.0 | 5.3.50 |
contao/core-bundle Packagist | From 4.0.0 | 5.3.50 |
contao/core-bundle Packagist | From 5.4.0-RC1 | 5.7.12 |
contao/core-bundle Packagist | From 5.4.0-RC1 | 5.7.12 |
How do I fix CVE-2026-107842?
Upgrade contao/core-bundle to a fixed version for your release line: 5.3.50 or 5.7.12.
Is CVE-2026-107842 being exploited?
There is no known exploitation of CVE-2026-107842 in the wild and no public exploit code.
Sources
Also known as GHSA-x2rp-9qf7-2fmq.