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GHSA-hgrp-fgm8-56g8
GHSA-hgrp-fgm8-56g8

Author: advisory-database[bot]

advisories/github-reviewed/2022/05/GHSA-hgrp-fgm8-56g8/GHSA-hgrp-fgm8-56g8.json

@@ -0,0 +1,88 @@
+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-hgrp-fgm8-56g8",
+  "modified": "2025-10-24T18:39:08Z",
+  "published": "2022-05-24T17:21:02Z",
+  "aliases": [
+    "CVE-2017-18872"
+  ],
+  "summary": "Mattermost Server's OAuth 2.0 service is vulnerable to attack through Missing Authorization",
+  "details": "An issue was discovered in Mattermost Server before 4.4.3 and 4.3.3. Attackers could reconfigure an OAuth app in some cases where Mattermost is an OAuth 2.0 service provider.",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/mattermost/mattermost-server"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "4.3.3"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/mattermost/mattermost-server"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "4.4.0-rc1"
+            },
+            {
+              "fixed": "4.4.3"
+            }
+          ]
+        }
+      ]
+    }
+  ],
+  "references": [
+    {
+      "type": "ADVISORY",
+      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-18872"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/mattermost/mattermost/commit/8f6bb1570dd234c63de5241eff9fbb268aad358c"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/mattermost/mattermost"
+    },
+    {
+      "type": "WEB",
+      "url": "https://mattermost.com/security-updates"
+    },
+    {
+      "type": "WEB",
+      "url": "http://github.com/mattermost/mattermost/commit/753386c2b2b06233d8bd977e3db29a4fe18098cb"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-862"
+    ],
+    "severity": "MODERATE",
+    "github_reviewed": true,
+    "github_reviewed_at": "2025-10-24T18:39:08Z",
+    "nvd_published_at": "2020-06-19T18:15:00Z"
+  }
+}