CVE-2022-39232 Discourse vulnerable to incomplete quote causing a topic to crash in the browser
An attacker can crash the browser page for users by submitting an incomplete quote, causing a client-side denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-39232?
CVE-2022-39232 is a medium-severity denial of service vulnerability in Discourse Discourse, published on 29 Sep 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Discourse is an open source discussion platform. Starting with version 2.9.0.beta5 and prior to version 2.9.0.beta10, an incomplete quote can generate a JavaScript error which will crash the current page in the browser in some cases. Version 2.9.0.beta10 added a fix and tests to ensure incomplete quotes won't break the app. As a workaround, the quote can be fixed via the rails console.
Weakness: CWE-20
Which versions are affected by CVE-2022-39232?
1 open source package ship an affected version, including discourse. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
discourse Bitnami | From 2.9.0-beta5 to 2.9.0-beta5 | None |
Products include Discourse Discourse.
How do I fix CVE-2022-39232?
No fix has been published for CVE-2022-39232 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-39232 being exploited?
There is no known exploitation of CVE-2022-39232 in the wild and no public exploit code.
Other vulnerabilities in Discourse Discourse
- CVE-2021-41163 RCE via malicious SNS subscription payload
- CVE-2022-36066 Discourse vulnerable to RCE via admins uploading maliciously zipped file
- CVE-2022-39356 Discourse user account takeover via email and invite link
- CVE-2023-22468 Discourse vulnerable to Cross-site Scripting in local oneboxes
- CVE-2026-27934 Discourse leaks private topic title and post excerpt via user action API endpoint
Sources
Also known as BIT-discourse-2022-39232, GHSA-cv64-v73f-7wq5.