Is CVE-2020-4049 in the CISA KEV catalog?

No. CVE-2020-4049 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-4049?

CVE-2020-4049 has a CVSS v3 base score of 2.4 (LOW).

What is the EPSS score for CVE-2020-4049?

CVE-2020-4049 has an EPSS score of 2.80% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-4049?

Upgrade wordpress on debian 11 to 5.4.2+dfsg1-1 or later.

CVE & CISA-KEV Catalog

CVE-2020-4049

LOWEPSS 85th pctl

2.4

CVSS v3

NVD

Description

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).

CWE-80 CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

wordpressDebian

Fixed in:5.4.2+dfsg1-1CVE-2020-4049

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredHigh

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N

Exploit Intelligence

2.80%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

wordpress.org

Third-Party Advisory4

Other references2

Embed a live status badge for CVE-2020-4049

Markdown

[![CVE-2020-4049](https://tridentstack.com/cve/badge/CVE-2020-4049.svg)](https://tridentstack.com/cve/CVE-2020-4049)

HTML

<a href="https://tridentstack.com/cve/CVE-2020-4049"><img src="https://tridentstack.com/cve/badge/CVE-2020-4049.svg" alt="CVE-2020-4049"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.