CVE-2024-39777
CRITICAL EPSS 28.2%
Published Aug 1, 20241y ago · Modified Jun 17, 20262w ago
9.6 CVSS 3.1
Published Aug 1, 2024 1y ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality High
Integrity High
Availability None
Threat Intelligence
EPSS Exploit Probability
28.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-284
Affected Products 4
| Vendor | Product | Version | Range |
|---|---|---|---|
| mattermost | mattermost | * | ≥9.5.0 – <9.5.7 |
| mattermost | mattermost | * | ≥9.7.0 – <9.7.6 |
| mattermost | mattermost | * | ≥9.8.0 – <9.8.2 |
| mattermost | mattermost | 9.9.0 | any |
References 1
- mattermost.com https://mattermost.com/security-updates
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.