CVE-2021-41095

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Summary

CVECVE-2021-41095
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-09-27 20:15:00 UTC
Updated2023-11-07 03:38:00 UTC
DescriptionDiscourse 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.

Risk And Classification

Problem Types: CWE-79

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Discourse Discourse 2.8.0 beta1 All All
Application Discourse Discourse 2.8.0 beta2 All All
Application Discourse Discourse 2.8.0 beta3 All All
Application Discourse Discourse 2.8.0 beta4 All All
Application Discourse Discourse 2.8.0 beta5 All All
Application Discourse Discourse 2.8.0 beta6 All All
Application Discourse Discourse All All All All

References

ReferenceSourceLinkTags
SECURITY: Escape watched word in error message by nbianca · Pull Request #14434 · discourse/discourse · GitHub MISC github.com
XSS via blocked watched word in error message · Advisory · discourse/discourse · GitHub CONFIRM github.com
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