What is CVE-2019-19327?

CVE-2019-19327 is a medium-severity vulnerability in Wikimedia Wikidata Query Gui, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-11-27.

How severe is CVE-2019-19327?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Wikimedia Wikidata Query Gui

CVE-2019-19327

ui/ResultView.js in Wikibase Wikidata Query Service GUI before 0.3.6-SNAPSHOT 2019-11-07 allows HTML injection when reporting the number of results and number of milliseconds. NOTE: this GUI code is no longer bundled with the Wikibase Wikidata Query Service snapshots, such as 0.3.6-SNAPSHOT.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-11-27 · last modified 2026-06-17.

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: 0.009 (56.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Wikimedia Wikidata Query Gui — versions 0.3.6

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

gerrit.wikimedia.org/r/ (Patch, Mailing List, Vendor Advisory)
lists.wikimedia.org/pipermail/wikidata-tech/2019-November/001503.html (Patch, Mailing List, Vendor Advisory)
gerrit.wikimedia.org/g/wikidata/query/gui/+/270f833cff8fdc1e050230ecc9f7dfc4d09… (Patch, Mailing List, Vendor Advisory)

Frequently asked questions

What is CVE-2019-19327?: CVE-2019-19327 is a medium-severity vulnerability in Wikimedia Wikidata Query Gui, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-11-27.
How severe is CVE-2019-19327?: Medium severity. CVSS v3 base score is 6.1 out of 10.