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CVE-2024-34507

Mediawiki vulnerability

7.4 HIGHPublic exploitEPSS 0.67%
  1. Published5 May 2024

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeChanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

Affected products

Mediawiki≥ 1.40.0 < 1.40.3 · ≥ 1.41.0 < 1.41.1 · < 1.39.7
Fedoraproject Fedora40

Remediation

Fixed in
Mediawiki≥ 1.40.3

References

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Frequently asked

Is CVE-2024-34507 being actively exploited?

CVE-2024-34507 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.67%.

How severe is CVE-2024-34507?

CVE-2024-34507 has a CVSS 3.1 base score of 7.4, rated high. EPSS estimates a 0.67% probability of exploitation.

Which products are affected by CVE-2024-34507?

Affected products include Mediawiki, Fedoraproject Fedora.

How do I fix CVE-2024-34507?

Upgrade affected software to a fixed version, for example Mediawiki 1.40.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-34507 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.