CVE-2023-3585

Name: CVE-2023-3585
Creator: NVD / NIST
Published: 2023-07-17T16:15:10.633+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.45%

Last modified Jun 17, 2026

CVE-2023-3585 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Mattermost Boards fail to properly validate a board link, allowing an attacker to crash a channel by posting a specially crafted boards link. . EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

Mattermost Boards fail to properly validate a board link, allowing an attacker to crash a channel by posting a specially crafted boards link.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.45%

35.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mattermost	Mattermost Server	< 7.8.7
Mattermost	Mattermost Server	>= 7.9.0, < 7.9.5
Mattermost	Mattermost Server	>= 7.10.0, < 7.10.3

References

https://mattermost.com/security-updatesVendor Advisory
https://mattermost.com/security-updatesVendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2023-3585?

Mattermost Boards fail to properly validate a board link, allowing an attacker to crash a channel by posting a specially crafted boards link.

How severe is CVE-2023-3585?

CVE-2023-3585 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.

How do I fix CVE-2023-3585?

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-2023-3585?

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

Scan your code now

Source: NVD / NIST