CyberRota Analysis
This is a medium severity vulnerability with a CVSS score of 5.3. Exploitation may require the attacker to be authenticated. It may lead to a denial-of-service condition.
CVE
CVE-2026-2456
Severity
MEDIUM
CVSS
5.3
EPSS
0.17%
Original NVD Description
Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 Mattermost fails to limit the size of responses from integration action endpoints, which allows an authenticated attacker to cause server memory exhaustion and denial of service via a malicious integration server that returns an arbitrarily large response when a user clicks an interactive message button.. Mattermost Advisory ID: MMSA-2026-00571
Related CVEs
Other vulnerabilities affecting the same vendor(s)