High severity · published Apr 24, 2025
CVE-2025-41395
Webapp DoS via malicious retrospective post in Playbooks
7.5
CVSS
0.5%
EPSS
No
On KEV
Description
Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted post with maliciously crafted props and cause a denial of service (DoS) of the web app for all users.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
Mattermost · Mattermost
10.4.0 through 10.4.2; 10.5.0; 9.11.0 through 9.11.10 · source: vendor
MS
Mattermost Server · Mattermost
9.11.0 before 9.11.11; 10.4.0 before 10.4.3; 10.5.0 before 10.5.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-41395
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-41395
Vendor Advisory
https://mattermost.com/security-updates
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