CVE-2026-6062CWE-639

IDOR in Jira plugin subscription edit endpoint

Medium · published June 22, 2026

CVSS v3.1
6.4
EPSS
0%
Percentile
14.2
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
6.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00240 · 14.2th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-06-22T13:40Z
EPSS history
Timeline
  • 22 JUN 13:40Z
    IDOR in Jira plugin subscription edit endpoint
    cvelistv5