CVE-2022-24866Network attack vector

Private user data disclosure via whole-object serialization

Published Apr 26, 2022 · Updated Apr 23, 2025

Information disclosure in Discourse Assign before 1.0.1 allows remote authenticated users to read private user and group data via bookmarks. The UserBookmarkSerializer places entire User or Group objects in assignment bookmark responses instead of limiting the serialized assignee fields. Assignment visibility is staff-only by default, but sites exposing assignment features more broadly disclose the data to any account allowed to view assignments.

CVSS severity4.3
Medium
EPSS probability0.65%
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 Assign before 1.0.1 allows remote authenticated users to read private user and group data via bookmarks. The UserBookmarkSerializer places entire User or Group objects in assignment bookmark responses instead of limiting the serialized assignee fields. Assignment visibility is staff-only by default, but sites exposing assignment features more broadly disclose the data to any account allowed to view assignments.

The record

CVE
CVE-2022-24866
Published
Apr 26, 2022
Updated
Apr 23, 2025
Vendor
Discourse
Product
Discourse Assign
Classifications
CWE-200, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 26, 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=< 1.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Discourse · Discourse Assignversion=< 1.0.1

Published CVSS scores

4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
4.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/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
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.

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Technologies

Your stack

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Your stack

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