CVE-2021-44854

MEDIUMNVD 5.35.3—

5.3

An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. The REST API publicly caches results from private wikis.

CVSS v3: 5.3
EG Score: 5.3(medium)
EPSS: 44.1%
KEV: Not listed

Published

December 26, 2022

Last Modified

April 14, 2025

References (4)

cve@mitrehttps://phabricator.wikimedia.org/T292763
cve@mitrehttps://security.gentoo.org/glsa/202305-24
af854a3a-2127-422b-91ae-364da2661108https://phabricator.wikimedia.org/T292763
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202305-24

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 9× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 09:46 UTCEG score recompute
2026-05-25 09:46 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2021-44854?

CVE-2021-44854 is a medium vulnerability published on December 26, 2022. An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. The REST API publicly caches results from private wikis.

When was CVE-2021-44854 disclosed?

CVE-2021-44854 was first published in the National Vulnerability Database on December 26, 2022, with the most recent update on April 14, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-44854 actively exploited?

CVE-2021-44854 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 44.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-44854?

CVE-2021-44854 has a CVSS v3 base score of 5.3 (NVD).

How do I remediate CVE-2021-44854?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-44854, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-44854

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CVE-2021-44854

📅 Published

🔄 Last Modified

🔗 References (4)