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TI-2024-37167 Aliases CVE-2024-56197

Users can see other user's tagged PMs in Discourse

Priority LOW 22CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-200.

Summary

Discourse is an open source platform for community discussion. PM titles and metadata can be read by other users when the "PM tags allowed for groups" option is enabled, the other user is a member of a group added to this option, and the PM has been tagged. This issue has been patched in the latest `stable`, `beta` and `tests-passed` versions of Discourse. Users are advised to upgrade. Users unable to upgrade should remove all groups from the the "PM tags allowed for groups" option.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00356 29th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
discoursediscoursestable: <= 3.3.3; beta: <= 3.4.0.beta4; tests-passed: <= 3.4.0.beta4—No fix listedCNA
  • discourse Vendordiscourse Affected stable: <= 3.3.3; beta: <= 3.4.0.beta4; tests-passed: <= 3.4.0.beta4 Fixed in — No fix listed CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:discourse:discourse:*:*:*:*:stable:*:*:*before 3.3.4Vulnerablediscourse
cpe:2.3:a:discourse:discourse:*:*:*:*:beta:*:*:*before 3.4.0Vulnerablediscourse
cpe:2.3:a:discourse:discourse:3.4.0:beta1:*:*:beta:*:*:*3.4.0 beta1Vulnerablediscourse
cpe:2.3:a:discourse:discourse:3.4.0:beta2:*:*:beta:*:*:*3.4.0 beta2Vulnerablediscourse
cpe:2.3:a:discourse:discourse:3.4.0:beta3:*:*:beta:*:*:*3.4.0 beta3Vulnerablediscourse
cpe:2.3:a:discourse:discourse:3.4.0:beta4:*:*:beta:*:*:*3.4.0 beta4Vulnerablediscourse
  • cpe:2.3:a:discourse:discourse:*:*:*:*:stable:*:*:* Versions before 3.3.4 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:*:*:*:*:beta:*:*:* Versions before 3.4.0 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:3.4.0:beta1:*:*:beta:*:*:* Versions 3.4.0 beta1 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:3.4.0:beta2:*:*:beta:*:*:* Versions 3.4.0 beta2 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:3.4.0:beta3:*:*:beta:*:*:* Versions 3.4.0 beta3 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:3.4.0:beta4:*:*:beta:*:*:* Versions 3.4.0 beta4 Vulnerable ·discourse

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-56197

References

Advisory 1

  • TI-2021-19656 Denial of Service in discourse CVSS 3.1MEDIUM 6.8
  • TI-2024-36150 Potential Backup file leaked via Nginx in Discourse CVSS 3.1HIGH 7.5
  • TI-2021-18002 RCE via malicious SNS subscription payload CVSS 3.1CRITICAL 10.0
  • TI-2026-24651 Discourse: Open redirect via `sso_destination_url` cookie in `enter` CVSS 4.0MEDIUM 5.1
  • TI-2026-22278 Discourse leaks private topic title and post excerpt via user action API endpoint CVSS 4.0HIGH 8.7
  • TI-2023-24152 Unauthenticated access to new private chat messages in Discourse CVSS 3.1HIGH 7.5
See all 262 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences