How severe is CVE-2024-40599?

CVE-2024-40599 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2024-40599 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-40599?

CVE-2024-40599 affects Mediawiki. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-40599?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-40599 have an EU (EUVD) identifier?

Yes. CVE-2024-40599 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38535.

When was CVE-2024-40599 published?

CVE-2024-40599 was published on 2024-07-07 and last updated on 2026-06-17.

CVE-2024-40599

CVE-2024-40599 is a medium-severity vulnerability in Mediawiki with a CVSS 3.x base score of 4.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-38535
Weakness: CWE-79
Affected product: Mediawiki
Published: 2024-07-07
Last modified: 2026-06-17

Description

An issue was discovered in the GuMaxDD skin for MediaWiki through 1.42.1. There is stored XSS via MediaWiki:Sidebar top-level menu entries.

Frequently asked questions

What is CVE-2024-40599?: An issue was discovered in the GuMaxDD skin for MediaWiki through 1.42.1. There is stored XSS via MediaWiki:Sidebar top-level menu entries.
How severe is CVE-2024-40599?: CVE-2024-40599 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2024-40599 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-40599?: CVE-2024-40599 affects Mediawiki. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-40599?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-40599 have an EU (EUVD) identifier?: Yes. CVE-2024-40599 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38535.
When was CVE-2024-40599 published?: CVE-2024-40599 was published on 2024-07-07 and last updated on 2026-06-17.

References

https://phabricator.wikimedia.org/T361448

Affected products (1)

cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*

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