Home/CVE/Contao is an open source CMS that allows you to create websites and scalable web applications. In affected versions it i
CVE

CVE-2021-37626

Contao is an open source CMS that allows you to create websites and scalable web applications. In affected versions it i

Contao is an open source CMS that allows you to create websites and scalable web applications. In affected versions it is possible to load PHP files by entering insert tags in the Contao back end. Installations are only affected if they have untrusted back end users who have the rights to modify fields that are shown in the front end.

Update to Contao 4.4.56, 4.9.18 or 4.11.7 to resolve. If you cannot update then disable the login for untrusted back end users.

HIGH · CVSS 7.2 EPSS 0.00492
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-94Improper Control of Generation of Code ('Code Injection')
▤

Affected Products & Versions

4
contao>= 4.4.0 and < 4.4.56
contao>= 4.9.0 and < 4.9.18
contao>= 4.11.0 and < 4.11.7
contaoall versions
▤

Affected Packages

2
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Packagist contao/contao MEDIUM fixed in 4.4.56
Packagist contao/core-bundle MEDIUM fixed in 4.4.56
▣

Scoring & Timeline

7.2
HIGH · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD11 Aug 2021 · 11:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://contao.org/en/security-advisories/php-file-inclusion-via-insert-tags.htmlVendor Advisory
https://github.com/contao/contao/security/advisories/GHSA-r6mv-ppjc-4hgrThird Party Advisory
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