CVE-2026-55849 json
@cyclonedx/cyclonedx-npm: Shell Injection via Unsanitized `--workspace` Argument
published 2026-06-19 4 mo ago modified 2026-10-25 14 d ago also GHSA-v75r-vx73-82pj , EUVD-2026-42432
- cvss
- 8.5
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 14%
- public exploits
- 0
- none known
Summary
@cyclonedx/cyclonedx-npm creates CycloneDX Software Bill of Materials from npm projects. From 2.1.0 before 5.0.0, the CLI passes user-supplied --workspace values to a subshell without proper sanitization when npm_execpath is unset or empty, allowing arbitrary OS command execution with the privileges of the invoking user. This issue is fixed in version 5.0.0.
Patch / fix
- npm @cyclonedx/cyclonedx-npm 5.0.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 4 mo ago
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.5 | 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 |
| CNA | 4.0 | 8.5 | 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 |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | @cyclonedx/cyclonedx-npm | >=2.1.0, <5.0.0 |
5.0.0 |
Affected products
- CycloneDX cyclonedx-node-npm
Classification
- Weakness
-
- CWE-78 Improper Neutralization of Special Elements used in an OS Command
References
-
github.com
/CycloneDX/cyclonedx-node-npm/pull/1476
web
- github.com /CycloneDX/cyclonedx-node-npm/commit/9f646253f4263d8644dadb86e5597fad996f688f
-
github.com
/CycloneDX/cyclonedx-node-npm/security/advisories/GHSA-v75r-vx73-82pj
web
-
github.com
/CycloneDX/cyclonedx-node-npm/releases/tag/v5.0.0
web
-
github.com
/CycloneDX/cyclonedx-node-npm
package
Sources
- CVE List CVE-2026-55849
- GitHub Advisory GHSA-v75r-vx73-82pj
- NVD CVE-2026-55849
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.