Privilege escalation in Contao
CVE-2021-37627
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.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (62.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Contao — versions 4.5.0, 4.2.0, 4.3.0
Weakness classification (CWE)
References
- github.com/contao/contao/security/advisories/GHSA-hq5m-mqmx-fw6m (Third Party Advisory)
- contao.org/en/security-advisories/privilege-escalation-with-the-form-generator… (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-37627?
- CVE-2021-37627 is a high-severity vulnerability in Contao, classified under Improper Privilege Management. CVSS score: 8.0/10. Published 2021-08-11.
- How severe is CVE-2021-37627?
- High severity. CVSS v3 base score is 8.0 out of 10.