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CVE-2022-31059

Discourse Calendar Event names susceptible to Cross-site Scripting

Published: Jun 14, 2022Updated: Nov 21, 2024 Sources: CVE List NVDCWE-79
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.7%
Top 52.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

discourse calendardiscourseWeb & CMS Plugins
discourse-calendardiscourseWeb & CMS Plugins
discoursecommercialUSWeb & CMS Pluginsaka discourse.org

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/discourse/discourse-calendar/commit/2719b9e81994e961bf8c4e12b4556dc9777dd62f
github.com
https://github.com/discourse/discourse-calendar/pull/280
github.com
https://github.com/discourse/discourse-calendar/security/advisories/GHSA-c783-x9vm-xxp5
github.com

Timeline

Published
Jun 14, 2022
Last Updated
Nov 21, 2024

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