CVE-2019-16781

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

At a glance

Severity: MEDIUM 5.8
EPSS: EPSS 1.61 % · percentile 76 (2026-10-27)
State: PUBLISHED
Published: 2019-12-26
Updated: 2024-08-05
Assigner: GitHub_M
NVD status: Modified

Description

In WordPress before 5.3.1, authenticated users with lower privileges (like contributors) can inject JavaScript code in the block editor, which is executed within the dashboard. It can lead to an admin opening the affected post in the editor leading to XSS.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 5.8	CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N	GitHub_M
CVSS 3.1	MEDIUM 5.8	CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N	NVD · security-advisories@github.com (Secondary)
CVSS 3.1	MEDIUM 5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N	NVD · nvd@nist.gov (Primary)
CVSS 2.0	LOW 3.5	AV:N/AC:M/Au:S/C:N/I:P/A:N	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

CWE-79

European references

ENISA EUVD · EUVD-2019-7299
GCVE · GCVE-0-2019-16781

Affected configurations (NVD CPE)

cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* < 5.3.1
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Affected products

Product	Versions
WordPress · WordPress	affected < 5.3.1 < 5.3.1

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD