What is CVE-2025-49221?

CVE-2025-49221 is a low-severity vulnerability in Mattermost Confluence, classified under Missing Authorization. CVSS score: 3.7/10. Published 2025-08-11.

How severe is CVE-2025-49221?

Low severity. CVSS v3 base score is 3.7 out of 10.

Is CVE-2025-49221 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Mattermost Confluence

CVE-2025-49221

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.

Vulnerability class: Broken Access Control

EPSS: 0.002 (13.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Mattermost Confluence
Mattermost Confluence Plugin — versions 0, 1.5.0

Weakness classification (CWE)

CWE-862 — Missing Authorization

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

responsibledisclosure@mattermost.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-49221?: CVE-2025-49221 is a low-severity vulnerability in Mattermost Confluence, classified under Missing Authorization. CVSS score: 3.7/10. Published 2025-08-11.
How severe is CVE-2025-49221?: Low severity. CVSS v3 base score is 3.7 out of 10.
Is CVE-2025-49221 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.