XSS in Contao
CVE-2022-24899
Contao is a powerful open source CMS that allows you to create professional websites and scalable web applications. In versions of Contao prior to 4.13.3 it is possible to inject code into the canonical tag. As a workaround users may disable canonical tags in the root page settings.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.045 (91.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.045 · newest: 0.045 · change: 0.000
Affected products
- Contao — versions < 4.13.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/contao/contao/commit/199206849a87ddd0fa5cf674eb3c58292fd8366c (Patch, Third Party Advisory)
- github.com/contao/contao/security/advisories/GHSA-m8x6-6r63-qvj2 (Third Party Advisory)
- contao.org/en/security-advisories/cross-site-scripting-via-canonical-url.html (Vendor Advisory)
Frequently asked questions
- What is CVE-2022-24899?
- CVE-2022-24899 is a high-severity vulnerability in Contao, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2022-05-06.
- How severe is CVE-2022-24899?
- High severity. CVSS v3 base score is 7.2 out of 10.
- Is CVE-2022-24899 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.