How severe is CVE-2024-40597?

CVE-2024-40597 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2024-40597 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-40597?

CVE-2024-40597 affects Mediawiki. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-40597?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-40597 have an EU (EUVD) identifier?

Yes. CVE-2024-40597 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38533.

When was CVE-2024-40597 published?

CVE-2024-40597 was published on 2024-07-07 and last updated on 2026-06-17.

CVE-2024-40597

CVE-2024-40597 is a high-severity vulnerability in Mediawiki with a CVSS 3.x base score of 7.5. 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-200.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-38533
Weakness: CWE-200
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. It can expose suppressed information for log events. (The log_deleted attribute is not respected.)

Frequently asked questions

What is CVE-2024-40597?: An issue was discovered in the CheckUser extension for MediaWiki through 1.42.1. It can expose suppressed information for log events. (The log_deleted attribute is not respected.)
How severe is CVE-2024-40597?: CVE-2024-40597 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2024-40597 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-40597?: CVE-2024-40597 affects Mediawiki. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-40597?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-40597 have an EU (EUVD) identifier?: Yes. CVE-2024-40597 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-38533.
When was CVE-2024-40597 published?: CVE-2024-40597 was published on 2024-07-07 and last updated on 2026-06-17.

References

https://phabricator.wikimedia.org/T326865

Affected products (1)

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

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