OAuth Redirect Vulnerability in Mattermost by Mattermost, Inc.
CVE-2025-9084

3.1LOW

Key Information:

Vendor

Mattermost
Status
Mattermost
Vendor
CVE Published:
15 September 2025

What is CVE-2025-9084?

Mattermost versions 10.5.x up to and including 10.5.9 are susceptible to an OAuth redirect vulnerability due to improper validation of redirect URLs. This flaw could be exploited by attackers to redirect users to malicious websites using specially crafted OAuth login links, posing significant risks to user data and system integrity. It's crucial for users of affected versions to update to the latest patch to mitigate these risks.

Affected Version(s)

Mattermost 10.5.0 <= 10.5.9

Mattermost 10.11.0

Mattermost 10.5.10

References

https://mattermost.com/security-updates

CVSS V3.1

Score:
3.1
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Juho Forsén
.