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CVE-2025-44004

Unauthenticated Channel Subscription Creation in Mattermost Confluence Plugin

Published: Aug 11, 2025Updated: Sep 25, 2025 Sources: CVE List NVD GHSA BDUCWE-306
NVD MITRE
7.2CVSSHIGH
EPSS Score
0.2%
Top 91.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Mattermost Confluence Plugin version <1.5.0 fails to check the authorization of the user to the Mattermost instance which allows attackers to create a channel subscription without proper authorization via API call to the create channel subscription endpoint.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-306

Affected Products

Mattermost Confluence PluginMattermost
On-prem
Communications / messaging-chat
github.com/mattermost/mattermost-plugin-confluenceGoOSS Libraries
Mattermost ConfluenceMattermost Inc
SaaS
Communications / messaging-chat
confluencemattermost
On-prem
Communications / messaging-chat
mattermostcommercialUSCommunications
gopackage-ecosystemOSS Libraries
mattermost inccommercialUSCommunicationsaka mattermost

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://mattermost.com/security-updates
mattermost.com
https://nvd.nist.gov/vuln/detail/CVE-2025-44004
nvd.nist.gov
https://github.com/mattermost/mattermost-plugin-confluence
github.com
and 3 more references View all →

Timeline

Published
Aug 11, 2025
Last Updated
Sep 25, 2025

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