EUVD-2026-81665
GHSA-q69g-4hcv-6jg4
Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Local CLI-argument vector (AV:L) needing a victim to run the tool (UI:R) with no auth (PR:N); command injection yields full C/I/A impact within the user's scope (S:U).
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
6DescriptionCVE.org
@cyclonedx/cyclonedx-npm creates CycloneDX Software Bill of Materials from npm projects. Prior to version 6.0.0, the Windows fallback path in src/npmRunner.ts, used when npm_execpath does not provide the npm CLI path, can construct a shell command containing an untrusted value from the --workspace option. When an attacker can influence that option and the fallback npm execution path is reached, shell metacharacters in the workspace value can execute arbitrary operating-system commands with the privileges of the user running the CLI, allowing data access, file modification, or service disruption. This issue is fixed in version 6.0.0.
Articles & Coverage 1
AnalysisAI
Command injection in the @cyclonedx/cyclonedx-npm CLI (versions before 6.0.0) lets an attacker who controls the value passed to the --workspace option run arbitrary operating-system commands on Windows hosts, with the privileges of the user invoking the tool. Exploitation is narrowly gated: the host must be Windows, the CLI must be invoked with --workspace, and the vulnerable Windows fallback npm-execution path in src/npmRunner.ts must be reached, which only occurs when the npm_execpath environment variable does not already point at the npm CLI. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires ALL of: (1) the target host is Windows; (2) cyclonedx-npm is invoked with the --workspace option and its value is attacker-controlled or attacker-influenced; and (3) the vulnerable Windows fallback npm-execution path in src/npmRunner.ts is reached, which only happens when the npm_execpath environment variable does NOT already point to the npm CLI. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine but tightly-gated command-injection flaw (CWE-78) rather than a mass-exploitation threat. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: upgrade @cyclonedx/cyclonedx-npm to 6.0.0 or later, which removes the unsafe shell path and reworks npm detection (see https://github.com/CycloneDX/cyclonedx-node-npm/releases/tag/v6.0.0, PR #1489 at https://github.com/CycloneDX/cyclonedx-node-npm/pull/1489, and commit https://github.com/CycloneDX/cyclonedx-node-npm/commit/15d3beb5bcd2b0b6eccfdf31192f5103b3f12c0f). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory every pipeline, runner image, and developer workstation that invokes @cyclonedx/cyclonedx-npm and flag any installation below 6.0.0, prioritizing Windows build agents; identify any job that passes externally controlled or dynamically generated values to the --workspace option and temporarily hardcode or allowlist workspace names so untrusted input can no longer reach that parameter. …
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View allSame technique Command Injection
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External POC / Exploit Code
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