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Mattermost Confluence Plugin has Missing Authorization vulnerability

Low severity GitHub Reviewed Published Aug 11, 2025 to the GitHub Advisory Database • Updated Aug 11, 2025

Package

gomod github.com/mattermost/mattermost-plugin-confluence (Go)

Affected versions

< 1.5.0

Patched versions

1.5.0

Description

Mattermost Confluence Plugin versions < 1.5.0 fail to enforce authentication of the user to the Mattermost instance, which allows unauthenticated attackers to access subscription details via an API call to the GET subscription endpoint.

References

Published by the National Vulnerability Database Aug 11, 2025
Published to the GitHub Advisory Database Aug 11, 2025
Reviewed Aug 11, 2025
Last updated Aug 11, 2025

Severity

Low

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(20th percentile)

Weaknesses

Missing Authorization

The product does not perform an authorization check when an actor attempts to access a resource or perform an action. Learn more on MITRE.

CVE ID

CVE-2025-49221

GHSA ID

GHSA-rfg4-2m63-fw2q

Source code

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