CVE-2022-24782Network attack vector

Restricted category-name disclosure via unfiltered activity exports

Published Mar 24, 2022 · Updated Apr 23, 2025

Information disclosure in Discourse allows remote authenticated users to learn restricted category names through personal activity exports. The export_user_archive job resolves category names without consistently applying Guardian visibility checks to category preferences and posts moved into private categories. The issue affects stable 2.8.2 and earlier, beta 2.9.0.beta3 and earlier, and tests-passed 2.9.0.beta3 and earlier; disclosure is limited to category names and the existence of private categories.

CVSS severity4.3
Medium
EPSS probability0.97%
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 allows remote authenticated users to learn restricted category names through personal activity exports. The export_user_archive job resolves category names without consistently applying Guardian visibility checks to category preferences and posts moved into private categories. The issue affects stable 2.8.2 and earlier, beta 2.9.0.beta3 and earlier, and tests-passed 2.9.0.beta3 and earlier; disclosure is limited to category names and the existence of private categories.

The record

CVE
CVE-2022-24782
Published
Mar 24, 2022
Updated
Apr 23, 2025
Vendor
Discourse
Product
Discourse
Classifications
CWE-200, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 24, 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=beta <= 2.9.0.beta3
  2. Affected versionversion=stable <= 2.8.2
  3. Affected versionversion=tests-passed <= 2.9.0.beta3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Discourse · Discourseversion=beta <= 2.9.0.beta3; version=stable <= 2.8.2; version=tests-passed <= 2.9.0.beta3

Published CVSS scores

4.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.0NIST NVDAV:N/AC:L/Au:S/C:P/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
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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