What is CVE-2026-0969?

CVE-2026-0969 is a high-severity vulnerability in Hashicorp Shared Library, classified under Code Injection. CVSS score: 8.8/10. Published 2026-02-12.

How severe is CVE-2026-0969?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Hashicorp Shared Library

CVE-2026-0969

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.

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.000 (15.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Hashicorp Shared Library — versions 4.3.0

Weakness classification (CWE)

CWE-94 — Code Injection

References

discuss.hashicorp.com/t/hcsec-2026-01-arbitrary-code-execution-in-react-server-…

Frequently asked questions

What is CVE-2026-0969?: CVE-2026-0969 is a high-severity vulnerability in Hashicorp Shared Library, classified under Code Injection. CVSS score: 8.8/10. Published 2026-02-12.
How severe is CVE-2026-0969?: High severity. CVSS v3 base score is 8.8 out of 10.