Cyber Resilience

CVE-2024-34507

HighPublic PoC

Published: 05 May 2024

Published
05 May 2024
Modified
04 November 2025
KEV Added
—
Patch
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CVSS Score v3.1 7.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
EPSS Score 0.0044 63.7th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-34507 is a high-severity Basic XSS (CWE-80) vulnerability in Mediawiki Mediawiki. Its CVSS base score is 7.4 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 36.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

An issue was discovered in includes/CommentFormatter/CommentParser.php in MediaWiki before 1.39.7, 1.40.x before 1.40.3, and 1.41.x before 1.41.1. XSS can occur because of mishandling of the 0x1b character, as demonstrated by Special:RecentChanges#%1b0000000.

CWE(s)
CWE-80

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

XSS vulnerability in public-facing MediaWiki application enables remote exploitation for arbitrary JavaScript execution in users' browsers.

Affected Assets

mediawiki
mediawiki
≤ 1.39.7 · 1.40.0 — 1.40.3 · 1.41.0 — 1.41.1
fedoraproject
fedora
40

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References