CVE-2026-6062
IDOR in Jira plugin subscription edit endpoint
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
Mattermost versions 11.7.x <= 11.7.0, 11.6.x <= 11.6.2, 11.5.x <= 11.5.5, 10.11.x <= 10.11.17 Fail to validate channel ownership of an existing subscription before applying edits which allows an authenticated attacker to hijack subscriptions from channels they have no access to via a crafted PUT request to the subscription edit endpoint.. Mattermost Advisory ID: MMSA-2026-00650
| CWE | CWE-639 |
| Vendor | mattermost |
| Product | mattermost |
| Published | Jun 22, 2026 |
| Last Updated | Jun 22, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
Low
Affected Versions
Mattermost / Mattermost
11.7.0 ≤ 11.7.0 11.6.0 ≤ 11.6.2 11.5.0 ≤ 11.5.5 10.11.0 ≤ 10.11.17
Credits
0hmz