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TI-2021-14104 Aliases CVE-2021-35210GHSA-h58v-c6rf-g9f7

Contao 4.5.x through 4.9.x before 4.9.16, and 4.10.x through 4.11.x before 4.11.5, allows…

Priority LOW 29CWE-79Published · Updated

Key facts

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

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

Summary

Contao 4.5.x through 4.9.x before 4.9.16, and 4.10.x through 4.11.x before 4.11.5, allows XSS. It is possible to inject code into the tl_log table that will be executed in the browser when the system log is called in the back end.

Why it matters now

EPSS 0.0074 54th percentileScored 2026-11-08
Fix Fixed contao/core-bundle (Packagist): 4.9.16, 4.11.5contao/contao (Packagist): 4.9.16, 4.11.5

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—contao/core-bundle (Packagist)4.5.0 to before 4.9.164.9.16Patch availableGHSA-h58v-c6rf-g9f7
—contao/core-bundle (Packagist)4.10.0 to before 4.11.54.11.5Patch availableGHSA-h58v-c6rf-g9f7
—contao/contao (Packagist)4.5.0 to before 4.9.164.9.16Patch availableGHSA-h58v-c6rf-g9f7
—contao/contao (Packagist)4.10.0 to before 4.11.54.11.5Patch availableGHSA-h58v-c6rf-g9f7
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • contao/core-bundle (Packagist) Vendor— Affected 4.5.0 to before 4.9.16 Fixed in 4.9.16 Patch available GHSA-h58v-c6rf-g9f7
  • contao/core-bundle (Packagist) Vendor— Affected 4.10.0 to before 4.11.5 Fixed in 4.11.5 Patch available GHSA-h58v-c6rf-g9f7
  • contao/contao (Packagist) Vendor— Affected 4.5.0 to before 4.9.16 Fixed in 4.9.16 Patch available GHSA-h58v-c6rf-g9f7
  • contao/contao (Packagist) Vendor— Affected 4.10.0 to before 4.11.5 Fixed in 4.11.5 Patch available GHSA-h58v-c6rf-g9f7

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:contao:contao:*:*:*:*:*:*:*:*4.5.0 to before 4.9.16; 4.10.0 to before 4.11.5Vulnerablecontao
  • cpe:2.3:a:contao:contao:*:*:*:*:*:*:*:* Versions 4.5.0 to before 4.9.16; 4.10.0 to before 4.11.5 Vulnerable ·contao

Remediation

  • Fix · GHSA-h58v-c6rf-g9f7 contao/core-bundle (Packagist) Fixed in 4.9.16 Advisory →
  • Fix · GHSA-h58v-c6rf-g9f7 contao/core-bundle (Packagist) Fixed in 4.11.5 Advisory →
  • Fix · GHSA-h58v-c6rf-g9f7 contao/contao (Packagist) Fixed in 4.9.16 Advisory →
  • Fix · GHSA-h58v-c6rf-g9f7 contao/contao (Packagist) Fixed in 4.11.5 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-35210
  2. 2026-10-03 Alias added: GHSA-h58v-c6rf-g9f7

References

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-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