CVE-2023-43658

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Summary

CVECVE-2023-43658
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-10-16 22:15:00 UTC
Updated2023-10-20 17:47:00 UTC
Descriptiondicourse-calendar is a plugin for the Discourse messaging platform which adds the ability to create a dynamic calendar in the first post of a topic. Improper escaping of event titles could lead to Cross-site Scripting (XSS) within the 'email preview' UI when a site has CSP disabled. Having CSP disabled is a non-default configuration, so the vast majority of sites are unaffected. This problem is resolved in the latest version of the discourse-calendar plugin. Users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled on the forum.

Risk And Classification

Problem Types: CWE-79

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Discourse Discourse Calendar All All All All

References

ReferenceSourceLinkTags
Content Security Policy (CSP) - HTTP | MDN MISC developer.mozilla.org
SECURITY: Properly escape user input when generating email HTML (#455) · discourse/discourse-calendar@9788310 · GitHub MISC github.com
Improper escaping of user input can lead to XSS under non-default site configuration · Advisory · discourse/discourse-calendar · GitHub MISC github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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