CVE-2023-44391Network attack vector

Anonymous user-summary disclosure via missing profile restriction

Published Oct 16, 2023 · Updated Sep 16, 2024

Information disclosure in affected Discourse releases allows remote attackers to read user summaries when public profiles are hidden. The user-summary response path returns summary details to anonymous requests without enforcing the hide_user_profiles_from_public setting. The site must enable that setting; exposure is limited to summary data that administrators intended to withhold from anonymous visitors.

CVSS severity5.3
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Information disclosure in affected Discourse releases allows remote attackers to read user summaries when public profiles are hidden. The user-summary response path returns summary details to anonymous requests without enforcing the hide_user_profiles_from_public setting. The site must enable that setting; exposure is limited to summary data that administrators intended to withhold from anonymous visitors.

The record

CVE
CVE-2023-44391
Published
Oct 16, 2023
Updated
Sep 16, 2024
Vendor
Discourse
Product
Discourse
Classifications
CWE-200
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <3.1.2
  2. Affected versionversion=0 <3.2.0.beta2
  3. Affected versionversion=beta <= 3.2.0.beta2
  4. Affected versionversion=stable <= 3.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Discourse · Discourseversion=0 <3.1.2; version=0 <3.2.0.beta2; version=beta <= 3.2.0.beta2; version=stable <= 3.1.1

Published CVSS scores

5.3GitHub Security AdvisoryCVSS: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

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo