CVE-2021-41118

HIGH 7.5CVE-2021-41118 · Published 04/10/2021 · updated 17/06/2026

In short

CVE-2021-41118 is a HIGH (CVSS 7.5) vulnerability affecting dynamicpagelist3 (dynamicpagelist3 project).
Chance of exploitation in the next 30 days (EPSS): 1.2%, higher than 67.3% of all vulnerabilities.
Fix: update to 3.3.6 or later.

Package	Affected versions	Patched versions
dynamicpagelist3 dynamicpagelist3_project	`< 3.3.6`	`3.3.6`

Description

The DynamicPageList3 extension is a reporting tool for MediaWiki, listing category members and intersections with various formats and details. In affected versions unsanitised input of regular expression date within the parameters of the DPL parser function, allowed for the possibility of ReDoS (Regex Denial of Service). This has been resolved in version 3.3.6. If you are unable to update you may also set `$wgDplSettings['functionalRichness'] = 0;` or disable DynamicPageList3 to mitigate.

References

Universal-Omega/DynamicPageList3 commit 2c04daf · Patch
Universal-Omega/DynamicPageList3 release 3.3.6 · Release Notes
Universal-Omega/DynamicPageList3 security advisory · Mitigation

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