Token Replay Attack Vulnerability in Mattermost by Mattermost Inc.
CVE-2025-13324

3.7LOW

Key Information:

Vendor

Mattermost
Status
Mattermost
Vendor
CVE Published:
17 December 2025

What is CVE-2025-13324?

Certain versions of Mattermost exhibit a security weakness where invite tokens are not invalidated after use. This oversight permits adversaries to intercept these tokens and subsequently exploit them to manipulate user memberships within private channels. The vulnerability essentially allows attackers to add or remove users by replaying the used invite tokens, creating a significant security concern for organizations relying on Mattermost for collaboration. It is critically important for users to ensure their installations are promptly updated to safeguard against this exploit.

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Affected Version(s)

Mattermost 10.11.0 <= 10.11.5

Mattermost 11.0.0 <= 11.0.4

Mattermost 10.12.0 <= 10.12.2

References

https://mattermost.com/security-updates

CVSS V3.1

Score:
3.7
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

daw10
JSON
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