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The CVE-2025-XXXXX vulnerability in the Mattermost Confluence Plugin (versions < 1.5.0) arises due to insufficient authorization checks in the `GET autocomplete/GetChannelSubscriptions` API endpoint. The plugin fails to validate whether a user has proper access to a channel before disclosing subscription details. Attackers can exploit this flaw by sending a crafted API request, allowing them to retrieve sensitive channel subscription information without authorization. This vulnerability is classified as low severity due to the limited impact of the exposed data and the requirement of some prior access to the system.
DailyCVE Form:
Platform: Mattermost Confluence Plugin
Version: < 1.5.0
Vulnerability: Missing Authorization
Severity: Low
Date: Aug 11, 2025
Prediction: Patch expected by Sep 2025
What Undercode Say:
curl -X GET "https://target/api/autocomplete/GetChannelSubscriptions"
import requests
response = requests.get("https://target/api/autocomplete/GetChannelSubscriptions")
print(response.text)
How Exploit:
- Send unauthorized GET request to
/autocomplete/GetChannelSubscriptions. - Extract channel subscription details without permission.
Protection from this CVE:
- Upgrade to version 1.5.0.
- Implement proper authorization checks.
Impact:
- Unauthorized data disclosure.
- Low risk due to limited exposure.
🎯Let’s Practice Exploiting & Learn Patching For Free:
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
