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cve/2024/CVE-2024-39807.md
0xMarcio cb00e1339f Update CVE list 2025-09-29 21:09
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### [CVE-2024-39807](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-39807)
![](https://img.shields.io/static/v1?label=Product&message=Mattermost&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=9.5.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=9.8.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-200%3A%20Exposure%20of%20Sensitive%20Information%20to%20an%20Unauthorized%20Actor&color=brightgreen)
### Description
Mattermost versions 9.5.x <= 9.5.5 and 9.8.0 fail to properly sanitize the recipients of a webhook event which allows an attacker monitoring webhook events to retrieve the channel IDs of archived or restored channels.
### POC
#### Reference
- https://mattermost.com/security-updates
#### Github
- https://github.com/fkie-cad/nvd-json-data-feeds
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