Vulnerability in Contao
CVE-2024-28234
Contao is an open source content management system. Starting in version 2.0.0 and prior to versions 4.13.40 and 5.3.4, it is possible to inject CSS styles via BBCode in comments. Installations are only affected if BBCode is enabled. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable BBCode for comments.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.006 (45.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Contao — versions >= 2.0.0, < 4.13.40, >= 5.0.0, < 5.3.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/contao/contao/security/advisories/GHSA-j55w-hjpj-825g (Vendor Advisory)
- github.com/contao/contao/commit/55b995d8d35da0d36bc6a22c53fe6423ab0c4ae2 (Patch)
- github.com/contao/contao/commit/6d42e667177c972ae7c219645593c262d7764ce2 (Patch)
- contao.org/en/security-advisories/insufficient-bbcode-sanitization (Vendor Advisory)
Frequently asked questions
- What is CVE-2024-28234?
- CVE-2024-28234 is a medium-severity vulnerability in Contao, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 4.3/10. Published 2024-04-09.
- How severe is CVE-2024-28234?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2024-28234 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.