CVE-2021-45471

mediumpriority · track · 21EPSS 0.012 · 69 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.25% (69th) EPSS

CVSS 5 · medium

Is it mine?

4 products

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

In MediaWiki through 1.37, blocked IP addresses are allowed to edit EntitySchema items.

cvss

Technical severity, 0–10. One row per scoring source.

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05mediumAV:N/AC:L/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 1.4

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

The CWE weakness classes this flaw belongs to.

CWE-285USLLM-inferred

Products and version ranges known to be affected.

Vendor and ecosystem advisories describing this.

BIT-mediawiki-2021-454712024-03-06vendor · osvUS
In MediaWiki through 1.37, blocked IP addresses are allowed to edit EntitySchema items.

Other names and identifiers for this entity.

Which sources assert this record, and when.

published 2021-12-24modified 2026-06-17

External citations — patches, advisories, analysis.

scry

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