From 3af29012142e430a6031c6367d87572e9ccac0aa Mon Sep 17 00:00:00 2001
From: Deniz Onur Duzgun <59659739+dduzgun-security@users.noreply.github.com>
Date: Fri, 20 Feb 2026 17:36:30 -0500
Subject: [PATCH] Improve GHSA-g4xw-jxrg-5f6m

---
 .../GHSA-g4xw-jxrg-5f6m.json                  | 29 +++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

diff --git a/advisories/unreviewed/2026/02/GHSA-g4xw-jxrg-5f6m/GHSA-g4xw-jxrg-5f6m.json b/advisories/unreviewed/2026/02/GHSA-g4xw-jxrg-5f6m/GHSA-g4xw-jxrg-5f6m.json
index 157325be9b0a5..3295d1a590483 100644
--- a/advisories/unreviewed/2026/02/GHSA-g4xw-jxrg-5f6m/GHSA-g4xw-jxrg-5f6m.json
+++ b/advisories/unreviewed/2026/02/GHSA-g4xw-jxrg-5f6m/GHSA-g4xw-jxrg-5f6m.json
@@ -6,14 +6,35 @@
   "aliases": [
     "CVE-2026-0969"
   ],
-  "details": "The serialize function used to compile MDX in next-mdx-remote is vulnerable to arbitrary code execution due to insufficient sanitization of MDX content.",
+  "summary": "Arbitrary code execution in React server-side rendering of untrusted MDX content ",
+  "details": "The serialize function used to compile MDX in next-mdx-remote is vulnerable to arbitrary code execution due to insufficient sanitization of MDX content. This vulnerability, CVE-2026-0969, is fixed in next-mdx-remote 6.0.0.",
   "severity": [
     {
       "type": "CVSS_V3",
       "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
     }
   ],
-  "affected": [],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "npm",
+        "name": "next-mdx-remote"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "4.3.0"
+            },
+            {
+              "fixed": "6.0.0"
+            }
+          ]
+        }
+      ]
+    }
+  ],
   "references": [
     {
       "type": "ADVISORY",
@@ -22,6 +43,10 @@
     {
       "type": "WEB",
       "url": "https://discuss.hashicorp.com/t/hcsec-2026-01-arbitrary-code-execution-in-react-server-side-rendering-of-untrusted-mdx-content/77155"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/hashicorp/next-mdx-remote"
     }
   ],
   "database_specific": {