Vulnerability in Discourse
CVE-2022-23641
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.012 (65.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Discourse — versions stable <= 2.8.0, beta <= 2.9.0.beta1, tests-passed <= 2.9.0.beta1
Weakness classification (CWE)
References
- github.com/discourse/discourse/security/advisories/GHSA-22xw-f62v-cfxv (Third Party Advisory, Issue Tracking)
- github.com/discourse/discourse/pull/15927 (Patch, Third Party Advisory)
- github.com/discourse/discourse/commit/a34075d205a8857e29574ffd82aaece0c467565e (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2022-23641?
- CVE-2022-23641 is a medium-severity vulnerability in Discourse, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 6.5/10. Published 2022-02-15.
- How severe is CVE-2022-23641?
- Medium severity. CVSS v3 base score is 6.5 out of 10.