CVE-2023-34250

Name: CVE-2023-34250
Creator: NVD / NIST
Published: 2023-06-13T22:15:09.663+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2023-34250 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Discourse is an open source discussion platform. Prior to version 3.0.4 of the `stable` branch and version 3.1.0.beta5 of the `beta` and `tests-passed` branches, an attacker could use the new topics dismissal endpoint to reveal the number of topics recently created (but not the actual content thereof) in categories they didn't have access to. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

Description

Discourse is an open source discussion platform. Prior to version 3.0.4 of the `stable` branch and version 3.1.0.beta5 of the `beta` and `tests-passed` branches, an attacker could use the new topics dismissal endpoint to reveal the number of topics recently created (but not the actual content thereof) in categories they didn't have access to. This issue is patched in version 3.0.4 of the `stable` branch and version 3.1.0.beta5 of the `beta` and `tests-passed` branches. There are no known workarounds.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.40%

31.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Discourse	Discourse	< 3.0.4	—
Discourse	Discourse	3.1.0	Beta1

References

https://github.com/discourse/discourse/security/advisories/GHSA-q8m5-wmjr-3ppgVendor Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-q8m5-wmjr-3ppgVendor Advisory

Timeline

Published: Jun 13, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-34250?

How severe is CVE-2023-34250?

CVE-2023-34250 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2023-34250?

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-2023-34250?

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

Scan your code now

Source: NVD / NIST