Deserialization of untrusted data in next-mdx-remote - CVE-2026-0969
Published: February 16, 2026
Vulnerability identifier: #VU122957
CSH Severity: High
CVSS v4: 9.1 [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]
CVE-ID: CVE-2026-0969
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
next-mdx-remote
How to mitigate CVE-2026-0969
Install updates from vendor's website.
next-mdx-remote - update to 6.0.0