CVE-2024-39836

Munged email address used for password resets and notifications

CVSS 4.8 MEDIUMEPSS 0.3%CWE-693

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 4.8EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

22 Aug 2024Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

Mattermost · Mattermost

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References

https://mattermost.com/security-updates