XSS in Mediawiki
CVE-2023-3550
Mediawiki v1.40.0 does not validate namespaces used in XML files. Therefore, if the instance administrator allows XML file uploads, a remote attacker with a low-privileged user account can use this exploit to become an administrator by sending a malicious link to the instance administrator.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.012 (63.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N.
Affected products
- Mediawiki — versions 1.40.0
- Debian Debian_linux — versions 10.0, 11.0
Weakness classification (CWE)
References
- help@fluidattacks.com (Exploit, Third Party Advisory)
- help@fluidattacks.com (Product)
- help@fluidattacks.com (Third Party Advisory)
- help@fluidattacks.com (Mailing List, Third Party Advisory)
- help@fluidattacks.com
Frequently asked questions
- What is CVE-2023-3550?
- CVE-2023-3550 is a high-severity vulnerability in Mediawiki, classified under Cross-site Scripting. CVSS score: 7.3/10. Published 2023-09-25.
- How severe is CVE-2023-3550?
- High severity. CVSS v3 base score is 7.3 out of 10.