Vulnerability Monitor

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CVE-2020-4049

In affected versions of WordPress, when uploading themes, the name of the theme folder can be crafted in a way that could lead to JavaScript execution in /wp-admin on the themes page. This does require an admin to upload the theme, and is low severity self-XSS. This has been patched in version 5.4.2, along with all the previously affected versions via a minor release (5.3.4, 5.2.7, 5.1.6, 5.0.10, 4.9.15, 4.8.14, 4.7.18, 4.6.19, 4.5.22, 4.4.23, 4.3.24, 4.2.28, 4.1.31, 4.0.31, 3.9.32, 3.8.34, 3.7.34).

Security Impact Summary

This vulnerability carries a LOW severity rating with a CVSS v3.1 score of 2.4, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required . The vulnerability impacts limited integrity, for affected systems. Impacting 3 products from wordpress, from fedoraproject, from debian organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2020-06-12T16:15:10.700

Last Modified

2024-11-21T05:32:13.407

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 2.4 (LOW)

CVSSv2 Vector

AV:N/AC:M/Au:S/C:N/I:P/A:N

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: SINGLE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

6.8

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-80
Type: Primary
CWE-79

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	wordpress	wordpress	< 3.7.34	Yes
Application	wordpress	wordpress	< 3.8.34	Yes
Application	wordpress	wordpress	< 3.9.32	Yes
Application	wordpress	wordpress	< 4.0.31	Yes
Application	wordpress	wordpress	< 4.1.31	Yes
Application	wordpress	wordpress	< 4.2.28	Yes
Application	wordpress	wordpress	< 4.3.24	Yes
Application	wordpress	wordpress	< 4.4.23	Yes
Application	wordpress	wordpress	< 4.5.22	Yes
Application	wordpress	wordpress	< 4.6.19	Yes
Application	wordpress	wordpress	< 4.7.18	Yes
Application	wordpress	wordpress	< 4.8.14	Yes
Application	wordpress	wordpress	< 4.9.15	Yes
Application	wordpress	wordpress	< 5.0.10	Yes
Application	wordpress	wordpress	< 5.1.6	Yes
Application	wordpress	wordpress	< 5.2.7	Yes
Application	wordpress	wordpress	< 5.3.4	Yes
Application	wordpress	wordpress	< 5.4.2	Yes
Operating System	fedoraproject	fedora	31	Yes
Operating System	fedoraproject	fedora	32	Yes
Operating System	debian	debian_linux	8.0	Yes
Operating System	debian	debian_linux	9.0	Yes
Operating System	debian	debian_linux	10.0	Yes

References

https://github.com/WordPress/wordpress-develop/commit/404f397b4012fd9d382e55bf7d206c1317f01148 Patch, Third Party Advisory ([email protected])
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-87h4-phjv-rm6p Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2020/07/msg00000.html Mailing List, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2020/09/msg00011.html Mailing List, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/773N2ZV7QEMBGKH6FBKI6Q5S3YJMW357/ ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODNHXVJS25YVWYQHOCICXTLIN5UYJFDN/ ([email protected])
https://wordpress.org/news/2020/06/wordpress-5-4-2-security-and-maintenance-release/ Vendor Advisory ([email protected])
https://www.debian.org/security/2020/dsa-4709 Third Party Advisory ([email protected])
https://github.com/WordPress/wordpress-develop/commit/404f397b4012fd9d382e55bf7d206c1317f01148 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-87h4-phjv-rm6p Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2020/07/msg00000.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2020/09/msg00011.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/773N2ZV7QEMBGKH6FBKI6Q5S3YJMW357/ (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ODNHXVJS25YVWYQHOCICXTLIN5UYJFDN/ (af854a3a-2127-422b-91ae-364da2661108)
https://wordpress.org/news/2020/06/wordpress-5-4-2-security-and-maintenance-release/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2020/dsa-4709 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For wordpress's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.