CVE-2019-19910

Name: CVE-2019-19910
Creator: NVD / NIST
Published: 2019-12-19T19:15:14.327+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.66%

Last modified Jun 17, 2026

CVE-2019-19910 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 0.66% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.66%

46.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Mediawiki	Mediawiki	1.34
Mediawiki	Mediawiki	1.35

References

https://gerrit.wikimedia.org/r/q/Ida471291f1698387a26736931ab17e6899e05b51Patch, Vendor Advisory
https://phabricator.wikimedia.org/T240487Third Party Advisory
https://gerrit.wikimedia.org/r/q/Ida471291f1698387a26736931ab17e6899e05b51Patch, Vendor Advisory
https://phabricator.wikimedia.org/T240487Third Party Advisory

Timeline

Published: Dec 19, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-19910?

How severe is CVE-2019-19910?

CVE-2019-19910 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.66% probability of exploitation in the next 30 days.

How do I fix CVE-2019-19910?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-19910?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST