Discourse-chat plugin susceptible to XSS in channel name and description
Priority LOW 25CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
discourse-chat is a plugin for the Discourse message board which adds chat functionality. In versions prior to 0.9 some places render a chat channel's name and description in an unsafe way, allowing staff members to cause an cross site scripting (XSS) attack by inserting unsafe HTML into them. Version 0.9 has addressed this issue. Users are advised to upgrade. There are no known workarounds for this issue.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00494 42nd percentileScored 2026-11-07
Fix Fixed discourse-chat (discourse): 0.9
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA discourse-chat (discourse) Fixed in 0.9
Timeline
- 2026-10-02 Threatist record created from CVE-2022-39279
References
More Discourse-chat vulnerabilities
- TI-2022-13139 Exposure of Sensitive Information in discourse-chat CVSS 3.1MEDIUM 6.5
- TI-2022-16480 Discourse-Chat Cross-Site Scripting issue for channel names and descriptions CVSS 3.1MEDIUM 5.4
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences