CVE-2022-23641 json
Denial of Service in Discourse
published 2022-02-15 4 y ago modified 2026-09-08 2 mo ago also BIT-discourse-2022-23641 , EUVD-2022-28589 , GHSA-22xw-f62v-cfxv
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 67%
- public exploits
- 0
- none known
Summary
Discourse is an open source discussion platform. In versions prior to 2.8.1 in the `stable` branch, 2.9.0.beta2 in the `beta` branch, and 2.9.0.beta2 in the `tests-passed` branch, users can trigger a Denial of Service attack by posting a streaming URL. Parsing Oneboxes in the background job trigger an infinite loop, which cause memory leaks. This issue is patched in version 2.8.1 of the `stable` branch, 2.9.0.beta2 of the `beta` branch, and 2.9.0.beta2 of the `tests-passed` branch. As a workaround, disable onebox in admin panel completely or specify allow list of domains that will be oneboxed.
Patch / fix
- bitnami discourse 2.8.1
- discourse discourse 2.8.1
- github.com/discourse/discourse@a34075d commit
- github.com/discourse/discourse#15927 pull request
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 18 mo ago
Exploit prediction
1.16% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:N/A:P |
| OSV | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | discourse | <2.8.1 |
2.8.1 |
Affected products
- discourse discourse
Classification
- Weakness
-
- CWE-835 Loop with Unreachable Exit Condition
References
-
github.com
/discourse/discourse/pull/15927
patch, third-party-advisory, advisory
-
github.com
/discourse/discourse/commit/a34075d205a8857e29574ffd82aaece0c467565e
patch, third-party-advisory, advisory
-
github.com
/discourse/discourse/security/advisories/GHSA-22xw-f62v-cfxv
issue-tracking, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2022-23641
web
Sources
- CVE List CVE-2022-23641
- NVD CVE-2022-23641
- OSV BIT-discourse-2022-23641
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.