CVE-2025-54458 | BDVDB-2026-289069 Detail

MattermostMattermost Confluence Plugin

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.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact none. Attack vector: network.

Weaknesses#

CWE-862 Missing Authorization

References#

https://mattermost.com/security-updates

Exploit#

No public exploit known

History#

Version 12025-08-11Record published in the CVE List.

Published

Published: 2025-08-11
Last modified: 2025-08-11

Vendor information

Vendor: Mattermost
Product: Mattermost Confluence Plugin

All Mattermost vulnerabilities

Score

5.0 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 14.2.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Missing Authorization

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 1.5.0
Fixed
1.5.0
Vulnerable
Not stated
Fixed
1.5.0

Scoring System

CVSS v4.0

Not available

CVSS v3.1

5.0 Medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	Low
User Interaction	None
Scope	Changed
Confidentiality	Low
Integrity	None
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).