CVE-2023-5969

Name: CVE-2023-5969
Creator: NVD / NIST
Published: 2023-11-06T16:15:42.987+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.53%

Last modified Jun 17, 2026

CVE-2023-5969 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Mattermost fails to properly sanitize the request to /api/v4/redirect_location allowing an attacker, sending a specially crafted request to /api/v4/redirect_location, to fill up the memory due to caching large items. . EPSS estimates a 0.53% chance of exploitation in the next 30 days.

Description

Mattermost fails to properly sanitize the request to /api/v4/redirect_location allowing an attacker, sending a specially crafted request to /api/v4/redirect_location, to fill up the memory due to caching large items.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.53%

40.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mattermost	Mattermost	<= 7.8.11
Mattermost	Mattermost	>= 8.0.0, <= 8.0.3
Mattermost	Mattermost	>= 8.1.0, <= 8.1.2
Mattermost	Mattermost	9.0.0

References

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

Timeline

Published: Nov 6, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-5969?

How severe is CVE-2023-5969?

CVE-2023-5969 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.

How do I fix CVE-2023-5969?

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-2023-5969?

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

Scan your code now

Source: NVD / NIST