Authorization Bypass in Mattermost Confluence Plugin <1.5.0 GET /subscription
CVE-2025-49221 Published on August 11, 2025

Unauthenticated Access to Channel Subscription in Mattermost Confluence Plugin
Mattermost Confluence Plugin version <1.5.0 fails to enforce authentication of the user to the Mattermost instance which allows unauthenticated attackers to access subscription details without via API call to GET subscription endpoint.

NVD

Vulnerability Analysis

CVE-2025-49221 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.

Attack Vector:
NETWORK
Attack Complexity:
HIGH
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
LOW
Integrity Impact:
NONE
Availability Impact:
NONE

Weakness Type

What is an AuthZ Vulnerability?

The software does not perform an authorization check when an actor attempts to access a resource or perform an action.

CVE-2025-49221 has been classified to as an AuthZ vulnerability or weakness.


Affected Versions

Mattermost Confluence Plugin:

Exploit Probability

EPSS
0.06%
Percentile
19.15%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.