Mattermost Authentication Bypass Vulnerability
CVE-2024-2450

8.8HIGH

Key Information:

Vendor
Mattermost
Status
Mattermost
Vendor
CVE Published:
15 March 2024

Summary

Versions of Mattermost prior to 8.1.10, 9.2.6, 9.3.2, and 9.4.3 contain a vulnerability that fails to properly verify account ownership when transitioning from email credentials to SAML authentication. This oversight enables a malicious user who is already authenticated to exploit the system and craft specific requests that could lead to the takeover of other user accounts, compromising both user privacy and system integrity.

Affected Version(s)

Mattermost 9.5.0

Mattermost 9.4.0 <= 9.4.2

Mattermost 9.3.0 <= 9.3.1

References

https://mattermost.com/security-updates

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Juho Nurminen
.