CVE-2019-19910 Cross-site scripting in n/a
Attackers can inject malicious scripts or leak client IP addresses via mishandled HTML attributes in the MinervaNeue mobile skin of MediaWiki.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2019-19910?
CVE-2019-19910 is a medium-severity cross-site scripting vulnerability in Mediawiki Mediawiki, published on 19 Dec 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2019-19910?
It affects 1 product.
Products include Mediawiki Mediawiki.
How do I fix CVE-2019-19910?
No fix has been published for CVE-2019-19910 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2019-19910 being exploited?
There is no known exploitation of CVE-2019-19910 in the wild and no public exploit code.
Other vulnerabilities in Mediawiki Mediawiki
Sources
Also known as GHSA-p8gq-8q2m-429c.