CVE-2021-41118: The DynamicPageList3 extension is a reporting tool for MediaWiki, listing category members and intersections w

Q: How do I fix CVE-2021-41118?

dynamicpagelist3: upgrade to 3.3.6. Exact commands for each OS are on this page.

Q: Is CVE-2021-41118 being exploited?

CVE-2021-41118 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-41118 affect?

CVE-2021-41118 affects dynamicpagelist3. Severity is medium (CVSS 5.3). 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 DP

Q: How urgent is CVE-2021-41118?

Priority 35/100. No elevated risk signals yet.

Routine

MEDIUM 5.3UPGRADE

CVE-2021-41118 is a medium-severity flaw (CVSS 5.3) affecting dynamicpagelist3. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.2% (top 33%)
CISA exploited list	No
Weakness	CWE-400
Published	2021-10-04
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: dynamicpagelist3 project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-10-04 19:15 UTCPublished CVE record published
2026-06-17 04:07 UTCUpdated Record last modified

dynamicpagelist3 project dynamicpagelist3 UPGRADE

Affected: < 3.3.6

Fixed in: 3.3.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy dynamicpagelist3 || rpm -q dynamicpagelist3 || dynamicpagelist3 --version

2. UPGRADE to 3.3.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade dynamicpagelist3

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade dynamicpagelist3

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-41118?

dynamicpagelist3: upgrade to 3.3.6. Exact commands for each OS are on this page.

Is CVE-2021-41118 being exploited?

CVE-2021-41118 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-41118 affect?

CVE-2021-41118 affects dynamicpagelist3. Severity is medium (CVSS 5.3). 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 DP

How urgent is CVE-2021-41118?

Priority 35/100. No elevated risk signals yet.

References

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