CVE-2023-36818

Name: CVE-2023-36818
Creator: NVD / NIST
Published: 2023-07-14T22:15:09.243+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.58%

Last modified Jun 17, 2026

CVE-2023-36818 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Discourse is an open source discussion platform. In affected versions a request to create or update custom sidebar section can cause a denial of service. EPSS estimates a 0.58% chance of exploitation in the next 30 days.

Description

Discourse is an open source discussion platform. In affected versions a request to create or update custom sidebar section can cause a denial of service. This issue has been patched in commit `52b003d915`. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.58%

43.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-400

Affected Software

Vendor	Product	Versions	Update
Discourse	Discourse	3.1.0	Beta5

References

Timeline

Published: Jul 14, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-36818?

How severe is CVE-2023-36818?

CVE-2023-36818 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.58% probability of exploitation in the next 30 days.

How do I fix CVE-2023-36818?

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-2023-36818?

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

Scan your code now

Source: NVD / NIST