CVE-2025-54458

Unauthorized Subscription Creation to Confluence Space in Mattermost Confluence Plugin

MEDIUM
5
CVSS Score
Published: August 11, 2025 at 06:57 PM UTC
Updated: June 17, 2026 at 09:40 AM UTC
2 products affected across 1 vendorConfluenceConfluence Plugin

Using Mattermost Confluence Plugin by Mattermost?

Get instant alerts when new vulnerabilities affect Mattermost Confluence Plugin - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

Mattermost Confluence Plugin version <1.5.0 fails to check the access of the user to the Confluence space which allows attackers to create a subscription for a Confluence space the user does not have access to via the create subscription endpoint.

Affected

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

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

5MEDIUMMattermost
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-862

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card