CVE-2022-39356 json
Discourse user account takeover via email and invite link
published 2022-11-02 4 y ago modified 2026-09-08 2 mo ago also BIT-discourse-2022-39356 , EUVD-2022-41823 , GHSA-x8w7-rwmr-w278
- cvss
- 8.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- bitnami discourse 2.8.10
- discourse discourse 2.8.10
- github.com/discourse/discourse#18817 pull request
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 18 mo ago
Exploit prediction
0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| OSV | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | discourse | <2.8.10 |
2.8.10 |
Affected products
- discourse discourse
Classification
- Weakness
-
- CWE-285 Improper Authorization
References
-
github.com
/discourse/discourse/pull/18817
patch, third-party-advisory, advisory
-
github.com
/discourse/discourse/security/advisories/GHSA-x8w7-rwmr-w278
third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2022-39356
web
Sources
- CVE List CVE-2022-39356
- NVD CVE-2022-39356
- OSV BIT-discourse-2022-39356
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.