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CVE-2026-0969

Arbitrary code execution in React server-side rendering of untrusted MDX content

Published: Feb 12, 2026Updated: Feb 12, 2026 Sources: CVE List NVD GHSACWE-94
NVD MITRE
8.8CVSSHIGH
EPSS Score
0.6%
Top 56.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-94

Affected Products

Shared libraryHashiCorp
On-prem
Cloud & SaaS / api-gateway
next-mdx-remotenpmOSS Libraries
hashicorpcommercialUSCloud & SaaSaka hashicorp inc.
npmpackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://discuss.hashicorp.com/t/hcsec-2026-01-arbitrary-code-execution-in-react-server-side-rendering-of-untrusted-mdx-content/77155
discuss.hashicorp.com
https://nvd.nist.gov/vuln/detail/CVE-2026-0969
nvd.nist.gov
https://github.com/hashicorp/next-mdx-remote/commit/4d527fdcaed911b87f427d0b4d3c711e817fa4b3
github.com
and 2 more references View all →

Timeline

Published
Feb 12, 2026
Last Updated
Feb 12, 2026

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