CVE-2022-31060Network attack vector

Banner topic disclosure via unauthenticated login preload

Published Jun 14, 2022 · Updated Apr 23, 2025

Information disclosure in Discourse stable before 2.8.4 and beta and tests-passed before 2.9.0.beta5 allows remote attackers to read banner topic data. The ApplicationController banner_json method placed cached banner JSON in the login page's data-preloaded element without checking current_user when login_required was enabled. An unauthenticated request to /login is sufficient, but exposure requires a login-required site with banner content; the flaw discloses rendered topic HTML without modification.

CVSS severity5.3
Medium
EPSS probability1.06%
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 stable before 2.8.4 and beta and tests-passed before 2.9.0.beta5 allows remote attackers to read banner topic data. The ApplicationController banner_json method placed cached banner JSON in the login page's data-preloaded element without checking current_user when login_required was enabled. An unauthenticated request to /login is sufficient, but exposure requires a login-required site with banner content; the flaw discloses rendered topic HTML without modification.

The record

CVE
CVE-2022-31060
Published
Jun 14, 2022
Updated
Apr 23, 2025
Vendor
Discourse
Product
Discourse
Classifications
CWE-200, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 14, 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.beta4
  2. Affected versionversion=stable < 2.8.4
  3. Affected versionversion=tests-passed <= 2.9.0.beta4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Discourse · Discourseversion=beta <= 2.9.0.beta4; version=stable < 2.8.4; version=tests-passed <= 2.9.0.beta4

Published CVSS scores

5.3GitHub CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.0NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
5.3NVDCVSS: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
T1190Exploit Public-Facing Application

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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