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TI-2022-20285 Aliases CVE-2022-41944

Discourse users can see notifications for topics they no longer have access to

Priority LOW 21CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure, Security bypass
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 and CWE-863.

Summary

Discourse is an open-source discussion platform. In stable versions prior to 2.8.12 and beta or tests-passed versions prior to 2.9.0.beta.13, under certain conditions, a user can see notifications for topics they no longer have access to. If there is sensitive information in the topic title, it will therefore have been exposed. This issue is patched in stable version 2.8.12, beta version 2.9.0.beta13, and tests-passed version 2.9.0.beta13. There are no workarounds available.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00508 43rd percentileScored 2026-11-08
Fix Fixed discourse (discourse): 2.8.12, 2.9.0.beta13

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 2.8.12; 2.9.0.beta0 to before 2.9.0.beta132.8.12, 2.9.0.beta13Patch availableCNA
  • discourse Vendordiscourse Affected before 2.8.12; 2.9.0.beta0 to before 2.9.0.beta13 Fixed in 2.8.12, 2.9.0.beta13 Patch available CNA

CPE configurations NVD · 13

CPEVersionsRoleVendor
cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*up to 2.8.11Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.9.0:beta1:*:*:*:*:*:*2.9.0 beta1Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.9.0:beta10:*:*:*:*:*:*2.9.0 beta10Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.9.0:beta11:*:*:*:*:*:*2.9.0 beta11Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.9.0:beta12:*:*:*:*:*:*2.9.0 beta12Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.9.0:beta2:*:*:*:*:*:*2.9.0 beta2Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.9.0:beta3:*:*:*:*:*:*2.9.0 beta3Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.9.0:beta4:*:*:*:*:*:*2.9.0 beta4Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.9.0:beta5:*:*:*:*:*:*2.9.0 beta5Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.9.0:beta6:*:*:*:*:*:*2.9.0 beta6Vulnerablediscourse
  • cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:* Versions up to 2.8.11 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.9.0:beta1:*:*:*:*:*:* Versions 2.9.0 beta1 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.9.0:beta10:*:*:*:*:*:* Versions 2.9.0 beta10 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.9.0:beta11:*:*:*:*:*:* Versions 2.9.0 beta11 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.9.0:beta12:*:*:*:*:*:* Versions 2.9.0 beta12 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.9.0:beta2:*:*:*:*:*:* Versions 2.9.0 beta2 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.9.0:beta3:*:*:*:*:*:* Versions 2.9.0 beta3 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.9.0:beta4:*:*:*:*:*:* Versions 2.9.0 beta4 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.9.0:beta5:*:*:*:*:*:* Versions 2.9.0 beta5 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.9.0:beta6:*:*:*:*:*:* Versions 2.9.0 beta6 Vulnerable ·discourse
Show 3 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:discourse:discourse:2.9.0:beta7:*:*:*:*:*:*2.9.0 beta7Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.9.0:beta8:*:*:*:*:*:*2.9.0 beta8Vulnerablediscourse
cpe:2.3:a:discourse:discourse:2.9.0:beta9:*:*:*:*:*:*2.9.0 beta9Vulnerablediscourse
  • cpe:2.3:a:discourse:discourse:2.9.0:beta7:*:*:*:*:*:* Versions 2.9.0 beta7 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.9.0:beta8:*:*:*:*:*:* Versions 2.9.0 beta8 Vulnerable ·discourse
  • cpe:2.3:a:discourse:discourse:2.9.0:beta9:*:*:*:*:*:* Versions 2.9.0 beta9 Vulnerable ·discourse

Remediation

  • Fix · CNA discourse (discourse) Fixed in 2.8.12, 2.9.0.beta13

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-41944

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