Deserialization of untrusted data in next-mdx-remote - CVE-2026-0969

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Main Vulnerability Database Vulnerabilities #VU122957

Deserialization of untrusted data in next-mdx-remote - CVE-2026-0969

Published: February 16, 2026


Vulnerability identifier: #VU122957
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-0969
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: HashiCorp
Affected software:
next-mdx-remote

Detailed vulnerability description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data. A remote attacker can pass specially crafted MDX content to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


How to mitigate CVE-2026-0969

Install updates from vendor's website.

Sources