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TI-2022-06053 Aliases CVE-2022-21677

Group advanced search option may leak group and group's members visibility

Priority LOW 26CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

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

Summary

Discourse is an open source discussion platform. Discourse groups can be configured with varying visibility levels for the group as well as the group members. By default, a newly created group has its visibility set to public and the group's members visibility set to public as well. However, a group's visibility and the group's members visibility can be configured such that it is restricted to logged on users, members of the group or staff users. A vulnerability has been discovered in versions prior to 2.7.13 and 2.8.0.beta11 where the group advanced search option does not respect the group's visibility and members visibility level. As such, a group with restricted visibility or members visibility can be revealed through search with the right search option. This issue is patched in `stable` version 2.7.13, `beta` version 2.8.0.beta11, and `tests-passed` version 2.8.0.beta11 versions of Discourse. There are no workarounds aside from upgrading.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01213 68th percentileScored 2026-11-07
Fix Fixed discourse (discourse): 2.7.13, 2.8.0.beta11

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
discoursediscoursebefore 2.7.13; before 2.8.0.beta112.7.13, 2.8.0.beta11Patch availableCNA
  • discourse Vendordiscourse Affected before 2.7.13; before 2.8.0.beta11 Fixed in 2.7.13, 2.8.0.beta11 Patch available CNA

CPE configurations NVD · 11

CPEVersionsRoleVendor
cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*up to 2.7.12Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.8.0:beta1:*:*:*:*:*:*2.8.0 beta1Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.8.0:beta10:*:*:*:*:*:*2.8.0 beta10Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.8.0:beta2:*:*:*:*:*:*2.8.0 beta2Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.8.0:beta3:*:*:*:*:*:*2.8.0 beta3Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.8.0:beta4:*:*:*:*:*:*2.8.0 beta4Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.8.0:beta5:*:*:*:*:*:*2.8.0 beta5Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.8.0:beta6:*:*:*:*:*:*2.8.0 beta6Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.8.0:beta7:*:*:*:*:*:*2.8.0 beta7Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.8.0:beta8:*:*:*:*:*:*2.8.0 beta8Vulnerablediscourse
  • cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:* Versions up to 2.7.12 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.8.0:beta1:*:*:*:*:*:* Versions 2.8.0 beta1 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.8.0:beta10:*:*:*:*:*:* Versions 2.8.0 beta10 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.8.0:beta2:*:*:*:*:*:* Versions 2.8.0 beta2 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.8.0:beta3:*:*:*:*:*:* Versions 2.8.0 beta3 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.8.0:beta4:*:*:*:*:*:* Versions 2.8.0 beta4 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.8.0:beta5:*:*:*:*:*:* Versions 2.8.0 beta5 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.8.0:beta6:*:*:*:*:*:* Versions 2.8.0 beta6 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.8.0:beta7:*:*:*:*:*:* Versions 2.8.0 beta7 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.8.0:beta8:*:*:*:*:*:* Versions 2.8.0 beta8 Vulnerable ·discourse
Show 1 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:discourse:discourse:2.8.0:beta9:*:*:*:*:*:*2.8.0 beta9Vulnerablediscourse
  • cpe:2.3:a:discourse:discourse:2.8.0:beta9:*:*:*:*:*:* Versions 2.8.0 beta9 Vulnerable ·discourse

Remediation

  • Fix · CNA discourse (discourse) Fixed in 2.7.13, 2.8.0.beta11

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-21677

References

Patch 1

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