RCE in Contao
CVE-2021-37626
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.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.013 (68.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
- Contao — versions 4.10.0, 4.7.0, 4.5.0
Weakness classification (CWE)
References
- github.com/contao/contao/security/advisories/GHSA-r6mv-ppjc-4hgr (Third Party Advisory)
- contao.org/en/security-advisories/php-file-inclusion-via-insert-tags.html (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-37626?
- CVE-2021-37626 is a high-severity vulnerability in Contao, classified under Code Injection. CVSS score: 7.2/10. Published 2021-08-11.
- How severe is CVE-2021-37626?
- High severity. CVSS v3 base score is 7.2 out of 10.