CVE-2021-32764
Last modified
CVE-2021-32764 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Discourse is an open-source discussion platform. In Discourse versions 2.7.5 and prior, parsing and rendering of YouTube Oneboxes can be susceptible to XSS attacks. EPSS estimates a 0.55% chance of exploitation in the next 30 days.
Description
Discourse is an open-source discussion platform. In Discourse versions 2.7.5 and prior, parsing and rendering of YouTube Oneboxes can be susceptible to XSS attacks. This vulnerability only affects sites which have modified or disabled Discourse's default Content Security Policy. The issue is patched in `stable` version 2.7.6, `beta` version 2.8.0.beta3, and `tests-passed` version 2.8.0.beta3. As a workaround, ensure that the Content Security Policy is enabled, and has not been modified in a way which would make it more vulnerable to XSS attacks.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Discourse | Discourse | <= 2.7.5 | — |
| Discourse | Discourse | 2.8.0 | Beta1 |
References
- https://github.com/discourse/discourse/security/advisories/GHSA-9x4c-29xg-56hwThird Party Advisory
- https://github.com/discourse/discourse/security/advisories/GHSA-9x4c-29xg-56hwThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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