CVE-2022-31059

Name: CVE-2022-31059
Creator: NVD / NIST
Published: 2022-06-14T20:15:07.847+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.69%

Last modified Jun 17, 2026

CVE-2022-31059 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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. EPSS estimates a 0.69% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.69%

47.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Discourse	Discourse Calendar	< 1.0.1

References

https://github.com/discourse/discourse-calendar/commit/2719b9e81994e961bf8c4e12b4556dc9777dd62fPatch, Third Party Advisory
https://github.com/discourse/discourse-calendar/pull/280Issue Tracking, Patch, Third Party Advisory
https://github.com/discourse/discourse-calendar/security/advisories/GHSA-c783-x9vm-xxp5Third Party Advisory
https://github.com/discourse/discourse-calendar/commit/2719b9e81994e961bf8c4e12b4556dc9777dd62fPatch, Third Party Advisory
https://github.com/discourse/discourse-calendar/pull/280Issue Tracking, Patch, Third Party Advisory
https://github.com/discourse/discourse-calendar/security/advisories/GHSA-c783-x9vm-xxp5Third Party Advisory

Timeline

Published: Jun 14, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-31059?

How severe is CVE-2022-31059?

CVE-2022-31059 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.69% probability of exploitation in the next 30 days.

How do I fix CVE-2022-31059?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-31059?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST