CVE-2021-41118

ReDoS in DynamicPageList3

HIGH
7.5
CVSS Score
Published: October 4, 2021 at 06:35 PM UTC
Updated: June 17, 2026 at 04:07 AM UTC
2 products affected across 2 vendorsDynamicpagelist3DynamicPageList3

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Severity
HIGH7.5
Exploit prediction
EPSS 1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 3.3.6
Affected range stops below 3.3.6, so it looks safe — our inference, not a vendor statement
v < 3.3.6
Affected range stops below 3.3.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-400

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