Secuno
ENNL
Book demo

CVE-2024-34502

Mediawiki cross-site request forgery (CSRF)

9.8 CRITICALEPSS 0.41%
  1. Published5 May 2024

Description

An issue was discovered in WikibaseLexeme in MediaWiki before 1.39.6, 1.40.x before 1.40.2, and 1.41.x before 1.41.1. Loading Special:MergeLexemes will (attempt to) make an edit that merges the from-id to the to-id, even if the request was not a POST request, and even if it does not contain an edit token.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Mediawiki≥ 1.40.0 < 1.40.2 · ≥ 1.41.0 < 1.41.1 · < 1.39.6
Fedoraproject Fedora40

Remediation

Fixed in
Mediawiki≥ 1.40.2

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-599778.1
ConvertX is a self-hosted file conversion service. Prior to 0.18.0, the /delete/{id}…
CVE-2026-1084798.1
Cross-Site Request Forgery (CSRF) vulnerability in Patreon Patreon WordPress…
CVE-2026-1078098.8
Nginx UI is a web user interface for the Nginx web server. From 2.0.0 until 2.5.0,…
CVE-2026-966718.8
Cross-Site Request Forgery (CSRF) vulnerability in fifu.app Featured Image from URL…
CVE-2026-621428.8
Cross-Site Request Forgery (CSRF) vulnerability in Melapress WP 2FA wp-2fa allows Cross…
CVE-2025-705228.8
The request handler of Fanvil x7a firmware version 2.6.0.1182 does not enforce any…

Frequently asked

Is CVE-2024-34502 being actively exploited?

CVE-2024-34502 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.41%.

How severe is CVE-2024-34502?

CVE-2024-34502 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.41% probability of exploitation.

Which products are affected by CVE-2024-34502?

Affected products include Mediawiki, Fedoraproject Fedora.

How do I fix CVE-2024-34502?

Upgrade affected software to a fixed version, for example Mediawiki 1.40.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-34502 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.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

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