CVE-2026-48027
Nx Console Embedded Malicious Code Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 10 June 2026). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Nx Console is the user interface for Nx & Lerna. On 19 May 2026, a malicious version of Nx Console, 18.95.0, was published at 12:30 PM UTC and removed soon after at 12:48 PM UTC, leaving it available for ~18 minutes in Visual Studio Marketplace. For OpenVSX, the problem was detected later, and the compromised version was available from 12:33 UTC to 13:09 UTC (~36 minutes). Version 18.100.0 of Nx Console is not compromised and users may remediate by upgrading to that version.
- CVSS 4.0
- 9.3 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 1.85% probability · 78th percentile
- CISA KEV
- Listed 27 May 2026 · due 10 June 2026 · used in ransomware campaigns
- Weakness
- CWE-506
- Affected
- nx/nx console
- Source
- security-advisories@github.com
CISA notes
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. This vulnerability could affect an open-source component, third-party library, protocol, or proprietary implementation that could be used by different products. For more information, please see: https://github.com/nrwl/nx-console/security/advisories/GHSA-c9j4-9m59-847w ; https://nvd.nist.gov/vuln/detail/CVE-2026-48027
References
- https://github.com/nrwl/nx-console/issues/3139Issue Tracking
- https://github.com/nrwl/nx-console/security/advisories/GHSA-c9j4-9m59-847wMitigation, Vendor Advisory
- https://nx.dev/blog/nx-console-v18-95-0-postmortem#indicators-of-compromiseVendor Advisory
- https://www.stepsecurity.io/blog/nx-console-vs-code-extension-compromisedExploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-48027US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.