CVE-2024-39772 Silent Desktop Screenshot Capture

Q: Which versions are affected by CVE-2024-39772?

3 open source packages ship an affected version, including mattermost-desktop and mattermost. It affects 1 product.

Q: Is CVE-2024-39772 being exploited?

There is no known exploitation of CVE-2024-39772 in the wild and no public exploit code.

Q: How do I fix CVE-2024-39772?

Upgrade mattermost-desktop to 5.9.0 or later.

Low 3.7 Published 16 Sep 2024 Updated 16 Sep 2024

Attackers can silently capture high-quality screenshots via JavaScript APIs in the Mattermost Desktop App, exposing sensitive visual data.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2024-39772?

CVE-2024-39772 is a low-severity vulnerability in Mattermost, published on 16 Sep 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Mattermost Desktop App versions <=5.8.0 fail to safeguard screen capture functionality which allows an attacker to silently capture high-quality screenshots via JavaScript APIs.

Weakness: CWE-284

Which versions are affected by CVE-2024-39772?

3 open source packages ship an affected version, including mattermost-desktop and mattermost. It affects 1 product.

Package	Affected	Fixed in
`mattermost-desktop` npm	All versions	`5.9.0`
`mattermost-desktop` npm	All versions	`5.9.0`
`mattermost` Bitnami	All versions	`5.9.0`

Products include Mattermost Mattermost Desktop.

How do I fix CVE-2024-39772?

Upgrade mattermost-desktop to 5.9.0 or later.

Is CVE-2024-39772 being exploited?

There is no known exploitation of CVE-2024-39772 in the wild and no public exploit code.

Sources

Also known as BIT-mattermost-2024-39772, GHSA-5777-rcjj-9p22.