CVE-2020-4049: WordPress wordpress-develop

Authenticated self-XSS via theme uploads in WordPress

CVSS 2.4 LowEPSS 0.025 · 85th percentile

Published by the CVE Program (CNA: GitHub_M) at 12 Jun 2020, 16:00 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-develop	affected >= 5.4.0, < 5.4.2 affected >= 5.3.0, < 5.3.4 affected >= 5.2.0, < 5.2.7 affected >= 5.1.0, < 5.1.6 affected >= 5.0.0, < 5.0.10 affected >= 4.9.0, < 4.9.15 affected >= 4.8.0, < 4.8.14 affected >= 4.7.0, < 4.7.18 affected >= 4.6.0, < 4.6.19 affected >= 4.5.0, < 4.5.22 affected >= 4.4.0, < 4.4.23 affected >= 4.3.0, < 4.3.24 and 6 more

Identifiers

CVE-2020-4049

CNA

GitHub_M

Weakness (CWE)

CWE-80

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
2.4	Low	3.1	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.025, the 85th percentile, on 12 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 12 Jun 2020. New records show when each source confirmed them.

Sources

References from the CNA

wordpress.org/news/2020/06/wordpress-5-4-2-security-and-maintenance-release/
github.com/WordPress/wordpress-develop/security/advisories/GHSA-87h4-phjv-rm6p confirm
github.com/WordPress/wordpress-develop/commit/404f397b4012fd9d382e55bf7d206c1317f01148
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODNHXVJS25YVWYQHOCICXTLIN5UYJFDN/ vendor-advisoryfedora
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/773N2ZV7QEMBGKH6FBKI6Q5S3YJMW357/ vendor-advisoryfedora
www.debian.org/security/2020/dsa-4709 vendor-advisorydebian
lists.debian.org/debian-lts-announce/2020/07/msg00000.html mailing-listmlist
lists.debian.org/debian-lts-announce/2020/09/msg00011.html mailing-listmlist

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.