What is the CVSS score of CVE-2026-0969?

CVE-2026-0969 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

How to fix or mitigate CVE-2026-0969?

Within 24 hours: Audit all systems using next-mdx-remote to identify versions and deployment scope; restrict MDX content processing to trusted sources only. Within 7 days: Implement input validation and sanitization controls; deploy network segmentation to limit blast radius if compromise occurs. Within 30 days: Monitor vendor releases for patch availability; plan immediate patching to version 6.0.0 when released; conduct security review of MDX handling processes.

CVE-2026-0969

HIGH

Code Injection (CWE-94)

2026-02-12 security@hashicorp.com

GHSA-g4xw-jxrg-5f6m

RCE Code Injection

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

Analysis Generated

Mar 12, 2026 - 22:02 vuln.today

CVE Published

Feb 12, 2026 - 03:15 nvd

HIGH 8.8

DescriptionCVE.org

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.

AnalysisAI

Authenticated attackers can execute arbitrary code through next-mdx-remote's MDX compiler due to inadequate input validation in the serialization function, affecting applications processing untrusted MDX content. An authenticated user with access to compile MDX can inject and execute malicious code with full system privileges. No patch is currently available, leaving all versions vulnerable to this critical code execution risk.

Technical ContextAI

Classified as CWE-94 (Code Injection). 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.