Publish GHSA-fcjp-h8cc-6879

Author: advisory-database[bot]

advisories/github-reviewed/2026/03/GHSA-fcjp-h8cc-6879/GHSA-fcjp-h8cc-6879.json

@@ -0,0 +1,84 @@
+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-fcjp-h8cc-6879",
+  "modified": "2026-03-24T21:39:52Z",
+  "published": "2026-03-24T21:39:52Z",
+  "aliases": [
+    "CVE-2026-33215"
+  ],
+  "summary": "NATS is vulnerable to MQTT hijacking via Client ID",
+  "details": "### Background\n\nNATS.io is a high performance open source pub-sub distributed communication technology, built for the cloud, on-premise, IoT, and edge computing.\n\nThe nats-server provides an MQTT client interface.\n\n### Problem Description\n\nSessions and Messages can by hijacked via MQTT Client ID malfeasance.\n\n### Affected Versions\n\nAny version before v2.12.6 or v2.11.15\n\n### Workarounds\n\nNone.\n\n### Resources\n\n * This document is canonically: <https://advisories.nats.io/CVE/secnote-2026-06.txt>\n * GHSA advisory: <https://github.com/nats-io/nats-server/security/advisories/GHSA-fcjp-h8cc-6879>\n * MITRE CVE entry: <https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-33215>",
+  "severity": [
+    {
+      "type": "CVSS_V3",
+      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/nats-io/nats-server/v2"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "2.11.15"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "package": {
+        "ecosystem": "Go",
+        "name": "github.com/nats-io/nats-server/v2"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "2.12.0-RC.1"
+            },
+            {
+              "fixed": "2.12.6"
+            }
+          ]
+        }
+      ]
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/nats-io/nats-server/security/advisories/GHSA-fcjp-h8cc-6879"
+    },
+    {
+      "type": "ADVISORY",
+      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33215"
+    },
+    {
+      "type": "WEB",
+      "url": "https://advisories.nats.io/CVE/secnote-2026-06.tx"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/nats-io/nats-server"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-287"
+    ],
+    "severity": "MODERATE",
+    "github_reviewed": true,
+    "github_reviewed_at": "2026-03-24T21:39:52Z",
+    "nvd_published_at": "2026-03-24T21:16:28Z"
+  }
+}