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TI-2022-06060 Aliases CVE-2022-21684

User can bypass approval when invited to Discourse

Priority MEDIUM 40CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-287.

Summary

Discourse is an open source discussion platform. Versions prior to 2.7.13 in `stable`, 2.8.0.beta11 in `beta`, and 2.8.0.beta11 in `tests-passed` allow some users to log in to a community before they should be able to do so. A user invited via email to a forum with `must_approve_users` enabled is going to be automatically logged in, bypassing the check that does not allow unapproved users to sign in. They will be able to do everything an approved user can do. If they logout, they cannot log back in. This issue is patched in the `stable` version 2.7.13, `beta` version 2.8.0.beta11, and `tests-passed` version 2.8.0.beta11. One may disable invites as a workaround. Administrators can increase `min_trust_level_to_allow_invite` to reduce the attack surface to more trusted users.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00858 58th 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:*:*:*:*:*:*:*:*before 2.7.13Vulnerablediscourse
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 before 2.7.13 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-2022-21684

References

Patch 3

  • 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