Is CVE-2021-41801 in the CISA KEV catalog?

No. CVE-2021-41801 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-41801?

CVE-2021-41801 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2021-41801?

CVE-2021-41801 has an EPSS score of 1.12% (62th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-41801?

Upgrade mediawiki on debian 11 to 1:1.35.4-1~deb11u1 or later.

CVE & CISA-KEV Catalog

CVE-2021-41801

HIGH

8.8

CVSS v3

NVD

Description

The ReplaceText extension through 1.41 for MediaWiki has Incorrect Access Control. When a user is blocked after submitting a replace job, the job is still run, even if it may be run at a later time (due to the job queue backlog)

How to fix

Remediation Available

mediawikiDebian

Fixed in:1:1.35.4-1~deb11u1CVE-2021-41801

Fixed in:1:1.35.4-1CVE-2021-41801

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

1.12%probability of exploitation in 30 days

62ndpercentile

Moderate risk: more likely to be exploited than 62% of all known CVEs.

References

Patch1

phabricator.wikimedia.org

Other references1

lists.wikimedia.org

Embed a live status badge for CVE-2021-41801

Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.