CVE-2024-39830

MediumCVSS 5.9/10Last modified Jun 17, 2026

Description

Mattermost versions 9.8.x <= 9.8.0, 9.7.x <= 9.7.4, 9.6.x <= 9.6.2 and 9.5.x <= 9.5.5, when shared channels are enabled, fail to use constant time comparison for remote cluster tokens which allows an attacker to retrieve the remote cluster token via a timing attack during remote cluster token comparison.

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-287 CWE-203

Affected software

Vendor	Product	Versions
Mattermost	Mattermost	9.8.0; >= 9.7.0, <= 9.7.4; >= 9.6.0, <= 9.6.2; >= 9.5.0, <= 9.5.5
mattermost	mattermost	9.8.0
mattermost	mattermost	>= 9.7.0, <= 9.7.4
mattermost	mattermost	>= 9.6.0, <= 9.6.2
mattermost	mattermost	>= 9.5.0, <= 9.5.5

References

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

Timeline

Published: Jul 3, 2024
Last modified: Jun 17, 2026
NVD status: Modified

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