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CVE-2025-49221

Unauthenticated Access to Channel Subscription in Mattermost Confluence Plugin

LOW
3.7
CVSS Score
Published: August 11, 2025 at 06:56 PM UTC
Updated: June 17, 2026 at 09:30 AM UTC
2 products affected across 1 vendorConfluenceConfluence Plugin

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Severity
LOW3.7
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Confluence· Mattermost
95%
v < 1.5.0
Confluence Plugin· Mattermost
60%
v < 1.5.0
Vendor states this is fixed in 1.5.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: [email protected]
https://mattermost.com/security-updates

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.7LOWMattermost
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-862

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