CVE-2021-29483Network attack vector

Private configuration disclosure via unfiltered wikiconfig output

Published Apr 28, 2021 · Updated Aug 3, 2024

Information disclosure in Miraheze ManageWiki before befb83c66f5b643e174897ea41a8a46679b26304 allows remote attackers to read private settings. ApiQueryWikiConfig::execute copied the complete ManageWikiSettings list into wikiconfig responses without removing entries whose visibility required permissions. No authentication or user interaction is required; exposed values can include Discord and Slack webhook secrets, while integrity and availability remain unaffected.

CVSS severity7.5
High
EPSS probability1.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Miraheze ManageWiki before befb83c66f5b643e174897ea41a8a46679b26304 allows remote attackers to read private settings. ApiQueryWikiConfig::execute copied the complete ManageWikiSettings list into wikiconfig responses without removing entries whose visibility required permissions. No authentication or user interaction is required; exposed values can include Discord and Slack webhook secrets, while integrity and availability remain unaffected.

The record

CVE
CVE-2021-29483
Published
Apr 28, 2021
Updated
Aug 3, 2024
Vendor
Miraheze
Product
ManageWiki
Classifications
CWE-200, T1213
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 28, 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?

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  1. Affected versionversion=< befb83c66f5b643e174897ea41a8a46679b26304

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Miraheze · ManageWikiversion=< befb83c66f5b643e174897ea41a8a46679b26304

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
7.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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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