Vulnerability · Published Feb 12, 2026 · Assigned by HashiCorp
CVE-2026-0969Arbitrary code execution in React server-side rendering of untrusted MDX content
High 8.8
In plain English
A high-severity code injection in Shared library from HashiCorp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.6%top 48.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | next-mdx-remote | 6.0.0 | GHSA-g4xw-jxrg-5f6m |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| HashiCorp | Shared library | 4.3.0 – before 6.0.0 |
Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H