Data Exposure in Mattermost by Allowing Access to Deleted Messages
CVE-2025-0503

3.1LOW

Key Information:

Vendor

Mattermost
Status
Mattermost
Vendor
CVE Published:
14 February 2025

What is CVE-2025-0503?

Versions of Mattermost from 9.11.x up to 9.11.6 contain a vulnerability that allows an unauthorized user to access metadata, including user IDs, from deleted direct messages via the deleted channels endpoint. This flaw stems from insufficient filtering of data, creating a potential avenue for attackers to infer sensitive information about users who used the platform. Users are advised to upgrade to the latest version to mitigate this risk.

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Affected Version(s)

Mattermost 9.11.0 <= 9.11.6

Mattermost 10.4.0

Mattermost 9.11.7

References

https://mattermost.com/security-updates

CVSS V3.1

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

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Devin Binnie
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