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TI-2022-08709 Aliases CVE-2022-24899GHSA-m8x6-6r63-qvj2

Cross site scripting via canonical tag

Priority MEDIUM 45CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

Contao is a powerful open source CMS that allows you to create professional websites and scalable web applications. In versions of Contao prior to 4.13.3 it is possible to inject code into the canonical tag. As a workaround users may disable canonical tags in the root page settings.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.04478 91st percentileScored 2026-11-07
Fix Fixed contao (contao): 4.13.3contao/core-bundle (Packagist): 4.13.3+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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
contaocontaobefore 4.13.34.13.3Patch availableCNA
—contao/core-bundle (Packagist)4.13.0 to before 4.13.34.13.3Patch availableGHSA-m8x6-6r63-qvj2
—contao/contao (Packagist)4.13.0 to before 4.13.34.13.3Patch availableGHSA-m8x6-6r63-qvj2
  • contao Vendorcontao Affected before 4.13.3 Fixed in 4.13.3 Patch available CNA
  • contao/core-bundle (Packagist) Vendor— Affected 4.13.0 to before 4.13.3 Fixed in 4.13.3 Patch available GHSA-m8x6-6r63-qvj2
  • contao/contao (Packagist) Vendor— Affected 4.13.0 to before 4.13.3 Fixed in 4.13.3 Patch available GHSA-m8x6-6r63-qvj2

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:contao:contao:*:*:*:*:*:*:*:*4.13.0 – 4.13.2Vulnerablecontao
  • cpe:2.3:a:contao:contao:*:*:*:*:*:*:*:* Versions 4.13.0 – 4.13.2 Vulnerable ·contao

Remediation

  • Fix · CNA contao (contao) Fixed in 4.13.3
  • Fix · GHSA-m8x6-6r63-qvj2 contao/core-bundle (Packagist) Fixed in 4.13.3 Advisory →
  • Fix · GHSA-m8x6-6r63-qvj2 contao/contao (Packagist) Fixed in 4.13.3 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-24899
  2. 2026-10-03 Alias added: GHSA-m8x6-6r63-qvj2

References

Patch 1

Advisory 3

Other 3

  • 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-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
  • TI-2019-14229 Contao 4.0 through 4.8.5 allows PHP local file inclusion. 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