CVE-2021-30152Public exploitNetwork attack vector

Authenticated page-protection escalation via incomplete API authorization

Published Apr 9, 2021 · Updated Aug 3, 2024

Improper privilege management in MediaWiki before 1.31.13 and 1.32.0 through 1.35.1 allows remote authenticated users to raise page protection. ApiProtect validates a requested level against the global RestrictionLevels list rather than the levels permitted for the requesting user. An account with the protect right can impose a higher restriction through action=protect and can remove it when editing and protection are unrestricted.

CVSS severity4.3
Medium
EPSS probability1.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper privilege management in MediaWiki before 1.31.13 and 1.32.0 through 1.35.1 allows remote authenticated users to raise page protection. ApiProtect validates a requested level against the global RestrictionLevels list rather than the levels permitted for the requesting user. An account with the protect right can impose a higher restriction through action=protect and can remove it when editing and protection are unrestricted.

The record

CVE
CVE-2021-30152
Published
Apr 9, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-269, T1565.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 9, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
4.0NIST NVDAV:N/AC:L/Au:S/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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