Mattermost Confluence Plugin has Missing Authorization vulnerability in github.com/mattermost/mattermost-plugin-confluence
Mattermost Confluence Plugin has Missing Authorization vulnerability in github.com/mattermost/mattermost-plugin-confluence
02 / AFFECTED SOFTWARE
Affected packages
10 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Mattermost Confluence Plugin has Missing Authorization vulnerability in github.com/mattermost/mattermost-plugin-confluence
Mattermost Confluence Plugin versions < 1.5.0 fail to check user access to the channel, allowing attackers to get channel subscription details without proper access to the channel via API call to the GET autocomplete/GetChannelSubscriptions endpoint.
Mattermost Confluence Plugin version <1.5.0 fails to check the access of the user to the channel which allows attackers to get channel subscription details without proper access to the channel via API call to the GET autocomplete/GetChannelSubscriptions endpoint.
05 / REFERENCES
Further evidence
- https://github.com/advisories/GHSA-42m6-5vm7-fjv2
- https://mattermost.com/security-updates
- https://nvd.nist.gov/vuln/detail/CVE-2025-53857
- https://github.com/mattermost/mattermost-plugin-confluence
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/53xxx/CVE-2025-53857.json
- https://github.com/mattermost/mattermost-plugin-confluence/