Vulnerability Description
Discourse is an open source discussion platform. There is a cross-site scripting (XSS) vulnerability in versions 2.7.7 and earlier of the `stable` branch, versions 2.8.0.beta6 and earlier of the `beta` branch, and versions 2.8.0.beta6 and earlier of the `tests-passed` branch. Rendering of some error messages that contain user input can be susceptible to XSS attacks. This vulnerability only affects sites which have blocked watched words that contain HTML tags, modified or disabled Discourse's default Content Security Policy. This issue is patched in the latest `stable`, `beta` and `tests-passed` versions of Discourse. As a workaround, avoid modifying or disabling Discourse’s default Content Security Policy, and blocking watched words containing HTML tags.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Discourse | Discourse | <= 2.7.7 |
Related Weaknesses (CWE)
References
- https://github.com/discourse/discourse/pull/14434/commits/40b776b9d39c41d9273d01PatchThird Party Advisory
- https://github.com/discourse/discourse/security/advisories/GHSA-qvqx-2h7w-m479Third Party Advisory
- https://github.com/discourse/discourse/pull/14434/commits/40b776b9d39c41d9273d01PatchThird Party Advisory
- https://github.com/discourse/discourse/security/advisories/GHSA-qvqx-2h7w-m479Third Party Advisory
FAQ
What is CVE-2021-41095?
CVE-2021-41095 is a vulnerability with a CVSS score of 4.2 (MEDIUM). Discourse is an open source discussion platform. There is a cross-site scripting (XSS) vulnerability in versions 2.7.7 and earlier of the `stable` branch, versions 2.8.0.beta6 and earlier of the `beta...
How severe is CVE-2021-41095?
CVE-2021-41095 has been rated MEDIUM with a CVSS base score of 4.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-41095?
Check the references section above for vendor advisories and patch information. Affected products include: Discourse Discourse.