CVE-2019-16781: WordPress WordPress

Stored cross-site scripting (XSS) in WordPress block editor

CVSS 5.8 MediumEPSS 0.016 · 76th percentile

Published by the CVE Program (CNA: GitHub_M) at 26 Dec 2019, 17:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
WordPress	WordPress	affected < 5.3.1 to before 5.3.1 custom

Identifiers

CVE-2019-16781

CNA

GitHub_M

Weakness (CWE)

CWE-79

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
5.8	Medium	3.1	CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.016, the 76th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 26 Dec 2019. New records show when each source confirmed them.

Sources

References from the CNA

wpvulndb.com/vulnerabilities/9976
wordpress.org/news/2019/12/wordpress-5-3-1-security-and-maintenance-release/
github.com/WordPress/wordpress-develop/security/advisories/GHSA-pg4x-64rh-3c9v confirm
hackerone.com/reports/731301
seclists.org/bugtraq/2020/Jan/8 mailing-listbugtraq
www.debian.org/security/2020/dsa-4599 vendor-advisorydebian
www.debian.org/security/2020/dsa-4677 vendor-advisorydebian

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.