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CVE-2025-54478

Unauthenticated Channel Subscription Edit in Mattermost Confluence Plugin

Published: Aug 11, 2025Updated: Sep 24, 2025 Sources: CVE List NVD GHSA BDUCWE-306
NVD MITRE
7.2CVSSHIGH
EPSS Score
0.2%
Top 87.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Mattermost Confluence Plugin version <1.5.0 fails to enforce authentication of the user to the Mattermost instance which allows unauthenticated attackers to edit channel subscriptions via API call to the edit 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
Mattermost ConfluenceMattermost Inc
SaaS
Communications / messaging-chat
confluencemattermost
On-prem
Communications / messaging-chat
github.com/mattermost/mattermost-plugin-confluenceGoOSS Libraries
mattermostcommercialUSCommunications
mattermost inccommercialUSCommunicationsaka mattermost
gopackage-ecosystemOSS Libraries

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://osv.dev/vulnerability/GHSA-qpjq-c5hr-7925&#13;
osv.dev
https://github.com/mattermost/mattermost-plugin-confluence&#13;
github.com
and 2 more references View all →

Timeline

Published
Aug 11, 2025
Last Updated
Sep 24, 2025

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