Is CVE-2024-34500 in the CISA KEV catalog?

No. CVE-2024-34500 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-34500?

CVE-2024-34500 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2024-34500?

CVE-2024-34500 has an EPSS score of 0.47% (38th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-34500?

Upgrade mediawiki to 1.41.1 or later.

CVE & CISA-KEV Catalog

CVE-2024-34500

MEDIUM

6.1

CVSS v3

NVD

Description

An issue was discovered in the UnlinkedWikibase extension in MediaWiki before 1.39.6, 1.40.x before 1.40.2, and 1.41.x before 1.41.1. XSS can occur through an interface message. Error messages (in the $err var) are not escaped before being passed to Html::rawElement() in the getError() function in the Hooks class.

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

mediawikiNVD

Affected:>= 1.41.0, < 1.41.1Fixed in:1.41.1CVE-2024-34500derived from NVD

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 RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.47%probability of exploitation in 30 days

38thpercentile

Low risk: more likely to be exploited than 38% of all known CVEs.

References

Patch1

gerrit.wikimedia.org

Vendor Advisory1

phabricator.wikimedia.org

Third-Party Advisory1

lists.fedoraproject.org

Other references1

lists.fedoraproject.org

Related Vulnerabilities

Other CWE-79 (Cross-Site Scripting (XSS)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-11022	Medium	6.9	99%	-	Fix
CVE-2019-3929	Critical	9.8	99%	KEV	Fix
CVE-2020-9496	Medium	6.1	99%	-	-
CVE-2023-28341	Medium	6.1	99%	-	Fix
CVE-2018-12998	Medium	6.1	98%	-	-
CVE-2025-4123	High	7.6	98%	-	Fix

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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 2025-11-04.