@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.
CVE-2026-71538
HIGHPre-NVD 8.58.5—
EchelonGraph scoreMEDIUM confidence
This high-severity CVE scores 8.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 90% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, secondary
8.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.5Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 8.5
- EG Score
- 8.5(medium)
- EG Risk
- 38(Track)EG Risk 38/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity85% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 10%
- KEV
- Not listed
Published
September 17, 2026
Last Modified
September 17, 2026
Advisory Details (4)
Auto-updated Sep 17, 2026Patch available. Sources: github, github_pr, github_commit, github_release.
github_release Patch Available
6.0.0
Patch available: CycloneDX/cyclonedx-node-npm v6.0.0
https://github.com/CycloneDX/cyclonedx-node-npm/releases/tag/v6.0.0github_commit Patch Available
commit 15d3beb5bcd2 (CycloneDX/cyclonedx-node-npm)
Patch available: CycloneDX/cyclonedx-node-npm v6.0.0 (contains commit 15d3beb5bcd2)
https://github.com/CycloneDX/cyclonedx-node-npm/commit/15d3beb5bcd2b0b6eccfdf31192f5103b3f12c0fgithub_pr Patch Available
BC: rework npm-cli detction
Patch available: CycloneDX/cyclonedx-node-npm v6.0.0 (PR #1489 merged 2026-07-07)
https://github.com/CycloneDX/cyclonedx-node-npm/pull/1489github Patch Available
Shell Injection via Unsanitized --workspace Argument in @cyclonedx/cyclonedx-npm on Windows · Advisory · CycloneDX/cyclonedx-node-npm · GitHub
https://github.com/CycloneDX/cyclonedx-node-npm/security/advisories/GHSA-q69g-4hcv-6jg4Vendor Advisories for CVE-2026-71538(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| @cyclonedx/cyclonedx-npm | — | 6.0.0 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 16× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-09-24 14:35 UTCEG score recompute
- 2026-09-24 01:53 UTCEG score recompute
- 2026-09-23 17:54 UTCEPSS rescore
- 2026-09-23 00:35 UTCEG score recompute
- 2026-09-21 23:16 UTCEG score recompute
- 2026-09-21 21:09 UTCEPSS rescore
- 2026-09-20 21:57 UTCEG score recompute
- 2026-09-20 20:16 UTCEPSS rescore
- 2026-09-19 20:35 UTCEG score recompute
- 2026-09-19 07:55 UTCEG score recompute
- 2026-09-18 19:28 UTCEPSS rescore
- 2026-09-17 17:57 UTCEG score recompute
- 2026-09-17 15:35 UTCEG score recompute
- 2026-09-17 15:23 UTCEG score recompute
- 2026-09-17 14:44 UTCEG score recompute
- 2026-09-17 14:44 UTCMITRE cvelistV5first tracked
Related CVEs(same product + same CWE)
Frequently asked(5)
What is CVE-2026-71538?
CVE-2026-71538 is a high vulnerability published on September 17, 2026. @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…
When was CVE-2026-71538 disclosed?
CVE-2026-71538 was first published in the National Vulnerability Database on September 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-71538 actively exploited?
CVE-2026-71538 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 89.8% of all scored CVEs.
What is the CVSS score of CVE-2026-71538?
CVE-2026-71538 has a CVSS v3 base score of 8.5 (NVD).
How do I remediate CVE-2026-71538?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-71538, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-71538
Is Your Infrastructure Affected by CVE-2026-71538?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.