CVE-2024-39777
8.7 · HIGHOverview
CVE-2024-39777 is a high-severity vulnerability affecting mattermost mattermost. It was published on August 1, 2024 and has a CVSS 3.1 base score of 8.7 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5 and 9.8.x <= 9.8.1 fail to disallow unsolicited invites to expose access to local channels, when shared channels are enabled, which allows a malicious remote to send an invite with the ID of an existing local channel, and that local channel will then become shared without the consent of the local admin.
Remediation
Check the references section for vendor advisories and patches from mattermost. Update mattermost to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| mattermost | mattermost | >= 9.5.0, < 9.5.7 | Affected |
References
Frequently Asked Questions
What is CVE-2024-39777?
CVE-2024-39777 is a high-severity vulnerability affecting mattermost mattermost. It was published on August 1, 2024 and has a CVSS 3.1 base score of 8.7 (HIGH).
How severe is CVE-2024-39777?
This vulnerability has a CVSS 3.1 base score of 8.7, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2024-39777?
Check the references section for vendor advisories and patches from mattermost. Update mattermost to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2024-39777?
CyberStrike's AI-powered security agents can automatically detect CVE-2024-39777 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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