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GHSA-gvg4-jhmr-6j23
GHSA-gvg4-jhmr-6j23

Author: advisory-database[bot]

advisories/github-reviewed/2026/05/GHSA-gvg4-jhmr-6j23/GHSA-gvg4-jhmr-6j23.json

@@ -0,0 +1,103 @@
+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-gvg4-jhmr-6j23",
+  "modified": "2026-06-01T15:19:14Z",
+  "published": "2026-05-18T09:31:48Z",
+  "aliases": [
+    "CVE-2026-4286"
+  ],
+  "summary": "Mattermost doesn't check if {{team_id}} was being changed when updating playbooks",
+  "details": "Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13 fail to check if {{team_id}} was being changed when updating playbooks, allowing users with only {{Manage Playbook Configurations}} permission to change a playbook's team, bypassing manage members restriction via PUT api. Mattermost Advisory ID: MMSA-2025-00552",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/mattermost/mattermost/server/v8"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "11.5.0"
+            },
+            {
+              "fixed": "11.5.2"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/mattermost/mattermost/server/v8"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "10.11.0"
+            },
+            {
+              "fixed": "10.11.14"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/mattermost/mattermost-plugin-playbooks"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "1.41.1-0.20260213020129-e1d6ec2c94e6"
+            }
+          ]
+        }
+      ]
+    }
+  ],
+  "references": [
+    {
+      "type": "ADVISORY",
+      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4286"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/mattermost/mattermost-plugin-playbooks/commit/e1d6ec2c94e695fb74e0c0c11c0d45e028bb96f3"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/mattermost/mattermost"
+    },
+    {
+      "type": "WEB",
+      "url": "https://mattermost.com/security-updates"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-863"
+    ],
+    "severity": "LOW",
+    "github_reviewed": true,
+    "github_reviewed_at": "2026-06-01T15:19:14Z",
+    "nvd_published_at": "2026-05-18T09:16:22Z"
+  }
+}