Discourse Calendar Event names susceptible to Cross-site Scripting
CVE-2022-31059

6.5MEDIUM

Key Information:

Vendor
Discourse
Status
Discourse-calendar
Vendor
CVE Published:
14 June 2022

Summary

Discourse Calendar is a calendar plugin for Discourse, an open-source messaging app. Prior to version 1.0.1, parsing and rendering of Event names can be susceptible to cross-site scripting (XSS) attacks. This vulnerability only affects sites which have modified or disabled Discourse’s default Content Security Policy. This issue is patched in version 1.0.1 of the Discourse Calendar plugin. 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.

Affected Version(s)

discourse-calendar < 1.0.1

References

https://github.com/discourse/discourse-calendar/security/...
x_refsource_CONFIRM
https://github.com/discourse/discourse-calendar/pull/280
x_refsource_MISC
https://github.com/discourse/discourse-calendar/commit/27...
x_refsource_MISC

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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