What is CVE-2024-39836?

CVE-2024-39836 is a medium-severity vulnerability in Mattermost, classified under Protection Mechanism Failure. CVSS score: 4.8/10. Published 2024-08-22.

How severe is CVE-2024-39836?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Vulnerability in Mattermost

CVE-2024-39836

Mattermost versions 9.9.x <= 9.9.1, 9.5.x <= 9.5.7, 9.10.x <= 9.10.0 and 9.8.x <= 9.8.2 fail to ensure that remote/synthetic users cannot create sessions or reset passwords, which allows the munged email addresses, created by shared channels, to be used to receive email notifications and to reset passwords, when they are valid, functional emails.

EPSS: 0.003 (17.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Mattermost — versions 9.9.0, 9.5.0, 9.10.0

Weakness classification (CWE)

CWE-693 — Protection Mechanism Failure

References

responsibledisclosure@mattermost.com (Vendor Advisory)

Frequently asked questions

What is CVE-2024-39836?: CVE-2024-39836 is a medium-severity vulnerability in Mattermost, classified under Protection Mechanism Failure. CVSS score: 4.8/10. Published 2024-08-22.
How severe is CVE-2024-39836?: Medium severity. CVSS v3 base score is 4.8 out of 10.