How severe is CVE-2024-40598?

CVE-2024-40598 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2024-40598 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-40598?

CVE-2024-40598 affects Mediawiki. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-40598?

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

Does CVE-2024-40598 have an EU (EUVD) identifier?

Yes. CVE-2024-40598 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38534.

When was CVE-2024-40598 published?

CVE-2024-40598 was published on 2024-07-07 and last updated on 2026-06-17.

CVE-2024-40598

CVE-2024-40598 is a medium-severity vulnerability in Mediawiki with a CVSS 3.x base score of 4.3. 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-532.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-38534
Weakness: CWE-532
Affected product: Mediawiki
Published: 2024-07-07
Last modified: 2026-06-17

Description

An issue was discovered in the CheckUser extension for MediaWiki through 1.42.1. The API can expose suppressed information for log events. (The log_deleted attribute is not applied to entries.)

Frequently asked questions

What is CVE-2024-40598?: An issue was discovered in the CheckUser extension for MediaWiki through 1.42.1. The API can expose suppressed information for log events. (The log_deleted attribute is not applied to entries.)
How severe is CVE-2024-40598?: CVE-2024-40598 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2024-40598 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-40598?: CVE-2024-40598 affects Mediawiki. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-40598?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-40598 have an EU (EUVD) identifier?: Yes. CVE-2024-40598 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38534.
When was CVE-2024-40598 published?: CVE-2024-40598 was published on 2024-07-07 and last updated on 2026-06-17.

References

https://phabricator.wikimedia.org/T326867

Affected products (1)

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

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