Home/CVE/Discourse is a platform for community discussion. Users who receive an invitation link that is not scoped to a single em
CVE

CVE-2022-39356

Discourse is a platform for community discussion. Users who receive an invitation link that is not scoped to a single em

Discourse is a platform for community discussion. Users who receive an invitation link that is not scoped to a single email address can enter any non-admin user's email and gain access to their account when accepting the invitation. All users should upgrade to the latest version.

A workaround is temporarily disabling invitations with SiteSetting.max_invites_per_day = 0 or scope them to individual email addresses.

HIGH · CVSS 8.9 EPSS 0.00323
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-285Improper Authorization
▤

Affected Products & Versions

2
discourse< 2.8.10
discourseall versions
▣

Scoring & Timeline

8.9
HIGH · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD02 Nov 2022 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/discourse/discourse/pull/18817PatchThird Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-x8w7-rwmr-w278Third Party Advisory
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