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Vulnerability record · CVE-2023-45363 · published 9 October 2023

CVE-2023-45363: Mediawiki vulnerability

Mediawiki · Mediawiki

An issue was discovered in ApiPageSet.php in MediaWiki before 1.35.12, 1.36.x through 1.39.x before 1.39.5, and 1.40.x before 1.40.1. It allows attackers to cause a denial of service (unbounded loop and RequestTimeoutException) when querying pages redirected to other variants with redirects and converttitles set.

7.5 CVSS 3.1 High EPSS 23% · top 2.3% CWE-835 · CWE-835
7.5CVSS 3.1 base score
23%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

An issue was discovered in ApiPageSet.php in MediaWiki before 1.35.12, 1.36.x through 1.39.x before 1.39.5, and 1.40.x before 1.40.1. It allows attackers to cause a denial of service (unbounded loop and RequestTimeoutException) when querying pages redirected to other variants with redirects and converttitles set.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://lists.debian.org/debian-lts-announce/2023/11/msg00027.html
https://phabricator.wikimedia.org/T333050 ExploitThird Party AdvisoryVendor Advisory
https://www.debian.org/security/2023/dsa-5520 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/11/msg00027.html
https://phabricator.wikimedia.org/T333050 ExploitThird Party AdvisoryVendor Advisory
https://www.debian.org/security/2023/dsa-5520 Third Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-45363), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.