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CVE-2025-52931

Unexpected input to Update Channel Subscription endpoint causes DoS in Mattermost Confluence Plugin

Published: Aug 11, 2025Updated: Sep 25, 2025 Sources: CVE List NVD GHSA BDUCWE-754
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.3%
Top 77.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Mattermost Confluence Plugin version <1.5.0 fails to handle unexpected request body which allows attackers to crash the plugin via constant hit to update channel subscription endpoint with an invalid request body.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-754

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

Exploitability

Official Patch Available

References

https://mattermost.com/security-updates
mattermost.com
https://nvd.nist.gov/vuln/detail/CVE-2025-52931
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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