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TI-2021-15502 Aliases CVE-2021-37627GHSA-hq5m-mqmx-fw6m

Privilege escalation via form generator

Priority LOW 37CWE-269Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
High
Impact type
Privilege escalation
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-269.

Summary

Contao is an open source CMS that allows creation of websites and scalable web applications. In affected versions it is possible to gain privileged rights in the Contao back end. Installations are only affected if they have untrusted back end users who have access to the form generator. All users are advised to update to Contao 4.4.56, 4.9.18 or 4.11.7. As a workaround users may disable the form generator or disable the login for untrusted back end users.

Why it matters now

EPSS 0.01023 63rd percentileScored 2026-11-07
Fix Fixed contao (contao): 4.4.56, 4.9.18, 4.11.7contao/core-bundle (Packagist): 4.4.56, 4.9.18, 4.11.7+1 more product

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
contaocontaobefore 4.4.56; 4.5.0 to before 4.9.18; 4.10.0 to before 4.11.74.4.56, 4.9.18, 4.11.7Patch availableCNA
—contao/core-bundle (Packagist)4.0.0 to before 4.4.564.4.56Patch availableGHSA-hq5m-mqmx-fw6m
—contao/core-bundle (Packagist)4.5.0 to before 4.9.184.9.18Patch availableGHSA-hq5m-mqmx-fw6m
—contao/core-bundle (Packagist)4.10.0 to before 4.11.74.11.7Patch availableGHSA-hq5m-mqmx-fw6m
—contao/contao (Packagist)4.0.0 to before 4.4.564.4.56Patch availableGHSA-hq5m-mqmx-fw6m
—contao/contao (Packagist)4.5.0 to before 4.9.184.9.18Patch availableGHSA-hq5m-mqmx-fw6m
—contao/contao (Packagist)4.10.0 to before 4.11.74.11.7Patch availableGHSA-hq5m-mqmx-fw6m
  • contao Vendorcontao Affected before 4.4.56; 4.5.0 to before 4.9.18; 4.10.0 to before 4.11.7 Fixed in 4.4.56, 4.9.18, 4.11.7 Patch available CNA
  • contao/core-bundle (Packagist) Vendor— Affected 4.0.0 to before 4.4.56 Fixed in 4.4.56 Patch available GHSA-hq5m-mqmx-fw6m
  • contao/core-bundle (Packagist) Vendor— Affected 4.5.0 to before 4.9.18 Fixed in 4.9.18 Patch available GHSA-hq5m-mqmx-fw6m
  • contao/core-bundle (Packagist) Vendor— Affected 4.10.0 to before 4.11.7 Fixed in 4.11.7 Patch available GHSA-hq5m-mqmx-fw6m
  • contao/contao (Packagist) Vendor— Affected 4.0.0 to before 4.4.56 Fixed in 4.4.56 Patch available GHSA-hq5m-mqmx-fw6m
  • contao/contao (Packagist) Vendor— Affected 4.5.0 to before 4.9.18 Fixed in 4.9.18 Patch available GHSA-hq5m-mqmx-fw6m
  • contao/contao (Packagist) Vendor— Affected 4.10.0 to before 4.11.7 Fixed in 4.11.7 Patch available GHSA-hq5m-mqmx-fw6m

CPE configurations NVD · 10

CPEVersionsRoleVendor
cpe:2.3:a:contao:contao:*:*:*:*:*:*:*:*4.4.0 to before 4.4.56; 4.9.0 to before 4.9.18; 4.11.0 to before 4.11.7Vulnerablecontao
cpe:2.3:a:contao:contao:4.0.0:*:*:*:*:*:*:*4.0.0Vulnerablecontao
cpe:2.3:a:contao:contao:4.1.0:*:*:*:*:*:*:*4.1.0Vulnerablecontao
cpe:2.3:a:contao:contao:4.2.0:*:*:*:*:*:*:*4.2.0Vulnerablecontao
cpe:2.3:a:contao:contao:4.3.0:*:*:*:*:*:*:*4.3.0Vulnerablecontao
cpe:2.3:a:contao:contao:4.5.0:*:*:*:*:*:*:*4.5.0Vulnerablecontao
cpe:2.3:a:contao:contao:4.6.0:*:*:*:*:*:*:*4.6.0Vulnerablecontao
cpe:2.3:a:contao:contao:4.7.0:*:*:*:*:*:*:*4.7.0Vulnerablecontao
cpe:2.3:a:contao:contao:4.8.0:*:*:*:*:*:*:*4.8.0Vulnerablecontao
cpe:2.3:a:contao:contao:4.10.0:*:*:*:*:*:*:*4.10.0Vulnerablecontao
  • cpe:2.3:a:contao:contao:*:*:*:*:*:*:*:* Versions 4.4.0 to before 4.4.56; 4.9.0 to before 4.9.18; 4.11.0 to before 4.11.7 Vulnerable ·contao
  • cpe:2.3:a:contao:contao:4.0.0:*:*:*:*:*:*:* Versions 4.0.0 Vulnerable ·contao
  • cpe:2.3:a:contao:contao:4.1.0:*:*:*:*:*:*:* Versions 4.1.0 Vulnerable ·contao
  • cpe:2.3:a:contao:contao:4.2.0:*:*:*:*:*:*:* Versions 4.2.0 Vulnerable ·contao
  • cpe:2.3:a:contao:contao:4.3.0:*:*:*:*:*:*:* Versions 4.3.0 Vulnerable ·contao
  • cpe:2.3:a:contao:contao:4.5.0:*:*:*:*:*:*:* Versions 4.5.0 Vulnerable ·contao
  • cpe:2.3:a:contao:contao:4.6.0:*:*:*:*:*:*:* Versions 4.6.0 Vulnerable ·contao
  • cpe:2.3:a:contao:contao:4.7.0:*:*:*:*:*:*:* Versions 4.7.0 Vulnerable ·contao
  • cpe:2.3:a:contao:contao:4.8.0:*:*:*:*:*:*:* Versions 4.8.0 Vulnerable ·contao
  • cpe:2.3:a:contao:contao:4.10.0:*:*:*:*:*:*:* Versions 4.10.0 Vulnerable ·contao

Remediation

  • Fix · CNA contao (contao) Fixed in 4.4.56, 4.9.18, 4.11.7
  • Fix · GHSA-hq5m-mqmx-fw6m contao/core-bundle (Packagist) Fixed in 4.4.56 Advisory →
  • Fix · GHSA-hq5m-mqmx-fw6m contao/core-bundle (Packagist) Fixed in 4.9.18 Advisory →
  • Fix · GHSA-hq5m-mqmx-fw6m contao/core-bundle (Packagist) Fixed in 4.11.7 Advisory →
  • Fix · GHSA-hq5m-mqmx-fw6m contao/contao (Packagist) Fixed in 4.4.56 Advisory →
  • Fix · GHSA-hq5m-mqmx-fw6m contao/contao (Packagist) Fixed in 4.9.18 Advisory →
  • Fix · GHSA-hq5m-mqmx-fw6m contao/contao (Packagist) Fixed in 4.11.7 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-37627
  2. 2026-10-03 Alias added: GHSA-hq5m-mqmx-fw6m

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