CVE-2022-24804Network attack vector

Private group-name disclosure via category serialization

Published Apr 11, 2022 · Updated Apr 23, 2025

Information disclosure in Discourse before 2.8.3 and 2.9.0.beta1 through 2.9.0.beta3 allows remote attackers to read private group names. CategoriesController show and find_by_slug serialize group_permissions to ordinary category viewers without checking whether the viewer can manage the category. Exposure requires a restricted-visibility group in a category's permission settings; any user who can view that category can learn the group's name.

CVSS severity5.3
Medium
EPSS probability0.86%
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 Discourse before 2.8.3 and 2.9.0.beta1 through 2.9.0.beta3 allows remote attackers to read private group names. CategoriesController show and find_by_slug serialize group_permissions to ordinary category viewers without checking whether the viewer can manage the category. Exposure requires a restricted-visibility group in a category's permission settings; any user who can view that category can learn the group's name.

The record

CVE
CVE-2022-24804
Published
Apr 11, 2022
Updated
Apr 23, 2025
Vendor
Discourse
Product
Discourse
Classifications
CWE-200, CWE-276
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.8.3
  2. Affected versionversion=>= 2.9.0.beta1, < 2.9.0.beta4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Discourse · Discourseversion=< 2.8.3; version=>= 2.9.0.beta1, < 2.9.0.beta4

Published CVSS scores

5.3NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.0NIST National Vulnerability DatabaseAV:N/AC:L/Au:N/C:P/I:N/A:N
5.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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
CWE-276Incorrect Default Permissions

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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