Low severity · published Aug 11, 2025
CVE-2025-49221
Unauthenticated Access to Channel Subscription in Mattermost Confluence Plugin
3.7
CVSS
0.2%
EPSS
No
On KEV
Description
Mattermost Confluence Plugin version <1.5.0 fails to enforce authentication of the user to the Mattermost instance which allows unauthenticated attackers to access subscription details without via API call to GET subscription endpoint.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MC
Mattermost Confluence Plugin · Mattermost
before 1.5.0 · source: vendor
CO
Confluence · Mattermost
before 1.5.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-49221
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-49221
Vendor Advisory
https://mattermost.com/security-updates
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