NPM · JULY 2026 · EARLY WARNING

Critical RCE Vulnerability in npm Package

EARLY WARNING · UNCONFIRMED. This page describes a developing threat that 0Day surfaced from early signals and has not yet independently confirmed. Details may change. Always verify against the primary sources before acting.
CVE-2023-49900Severity: CRITICAL

An early warning has been issued regarding a critical vulnerability (CVE-2023-49900) in an npm package that reportedly allows unauthenticated remote code execution due to insufficient sanitization of user input in the SetParameter command.

What happened

An early warning has been issued for a critical vulnerability, tracked as CVE-2023-49900, affecting an npm package. This vulnerability appears to allow an unauthenticated remote attacker to execute arbitrary code due to insufficient sanitization of user input in the SetParameter command. The CVSS score for this vulnerability is 9.8, indicating a critical severity level.

Professional software engineers are advised to assess their exposure by reviewing their use of the affected npm package. It is recommended to upgrade to the latest version of the package as soon as it becomes available and to review any potentially exposed secrets that may be at risk.

Further details about the affected versions, specific exploitation vectors, and the identity of the compromised package are under investigation. For the most accurate and up-to-date information, professionals should consult the primary sources, including the NVD page for CVE-2023-49900.

How 0Day mitigates this

MATCHED TO YOUR ACTUAL DEPENDENCY GRAPH0Day matches every incoming threat signal against your GitHub organization’s full dependency graph, including transitive dependencies. If cve-2023-49900 is anywhere in your dependency tree, the engineers who own the affected repositories get a push alert the moment it is flagged — no manual audit to remember to run.

Read how this differs from waiting on a scanner to catch a known advisory, or see the exact, read-only access 0Day needs to do this for an organization.

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