XSS in MediaWiki
CVE-2019-19910
The MinervaNeue Skin in MediaWiki from 2019-11-05 to 2019-12-13 (1.35 and/or 1.34) mishandles certain HTML attributes, as demonstrated by IMG onmouseover= (impact is XSS) and IMG src=http (impact is disclosing the client's IP address). This can occur within a talk page topical header that is viewed within a mobile (MobileFrontend) context.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.007 (50.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- MediaWiki — versions 1.34, 1.35
Weakness classification (CWE)
References
- phabricator.wikimedia.org/T240487 (Third Party Advisory)
- gerrit.wikimedia.org/r/q/Ida471291f1698387a26736931ab17e6899e05b51 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2019-19910?
- CVE-2019-19910 is a medium-severity vulnerability in MediaWiki, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-12-19.
- How severe is CVE-2019-19910?
- Medium severity. CVSS v3 base score is 6.1 out of 10.