CVE-2025-54478
High
Description
Mattermost Confluence Plugin version <1.5.0 fails to enforce authentication of the user to the Mattermost instance which allows unauthenticated attackers to edit channel subscriptions via API call to the edit channel subscription endpoint.
SeverityHigh
CVSS7.2
Exploit probability—
Product
Mattermost Confluence
PublishedAug 11, 2025
First seenAug 11, 2025
Weakness typeCWE-306Missing authentication for critical function
How to fix
Update
- mattermost confluence1.5.0 or later
- github.com/mattermost/mattermost-plugin-confluence1.5.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mattermost confluence | v < 1.5.0 | 1.5.0 |
| github.com/mattermost/mattermost-plugin-confluenceGo | v < 1.5.0 | 1.5.0 |
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