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TI-2024-18794 Aliases CVE-2024-28235GHSA-9jh5-qf84-x6pr

Contao possible cookie sharing with external domains while checking protected pages for broken links

Priority LOW 38CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200.

Summary

Contao is an open source content management system. Starting in version 4.9.0 and prior to versions 4.13.40 and 5.3.4, when checking for broken links on protected pages, Contao sends the cookie header to external urls as well, the passed options for the http client are used for all requests. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable crawling protected pages.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00708 53rd percentileScored 2026-11-07
Fix Fixed contao (contao): 4.13.40, 5.3.4contao/core-bundle (Packagist): 4.13.40, 5.3.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
contaocontao4.9.0 to before 4.13.40; 5.0.0-RC1 to before 5.3.44.13.40, 5.3.4Patch availableCNA
—contao/core-bundle (Packagist)4.9.0 to before 4.13.404.13.40Patch availableGHSA-9jh5-qf84-x6pr
—contao/core-bundle (Packagist)5.0.0-RC1 to before 5.3.45.3.4Patch availableGHSA-9jh5-qf84-x6pr
  • contao Vendorcontao Affected 4.9.0 to before 4.13.40; 5.0.0-RC1 to before 5.3.4 Fixed in 4.13.40, 5.3.4 Patch available CNA
  • contao/core-bundle (Packagist) Vendor— Affected 4.9.0 to before 4.13.40 Fixed in 4.13.40 Patch available GHSA-9jh5-qf84-x6pr
  • contao/core-bundle (Packagist) Vendor— Affected 5.0.0-RC1 to before 5.3.4 Fixed in 5.3.4 Patch available GHSA-9jh5-qf84-x6pr

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:contao:contao:*:*:*:*:*:*:*:*4.9.0 to before 4.13.40; 5.0.0 to before 5.3.4Vulnerablecontao
  • cpe:2.3:a:contao:contao:*:*:*:*:*:*:*:* Versions 4.9.0 to before 4.13.40; 5.0.0 to before 5.3.4 Vulnerable ·contao

Remediation

  • Fix · CNA contao (contao) Fixed in 4.13.40, 5.3.4
  • Fix · GHSA-9jh5-qf84-x6pr contao/core-bundle (Packagist) Fixed in 4.13.40 Advisory →
  • Fix · GHSA-9jh5-qf84-x6pr contao/core-bundle (Packagist) Fixed in 5.3.4 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-28235
  2. 2026-10-03 Alias added: GHSA-9jh5-qf84-x6pr

References

Patch 2

Advisory 3

Other 2

  • TI-2022-09661 Contao Managed Edition v1.5.0 was discovered to contain a remote command execution (RCE)… CVSS 3.1CRITICAL 9.8
  • TI-2024-30849 Unrestricted file upload in Contao CVSS 3.1MEDIUM 6.4
  • TI-2023-18600 Contao cross site scripting vulnerability via input unit widget CVSS 3.1MEDIUM 6.5
  • TI-2022-08709 Cross site scripting via canonical tag CVSS 3.1HIGH 7.2
  • TI-2019-08602 Contao 4.x allows SQL Injection. CVSS 3.0CRITICAL 9.8
  • TI-2024-30447 Remote command execution through file upload in contao/core-bundle CVSS 3.1HIGH 8.8
See all 31 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences