Prototype pollution in systeminformation networkStats()
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · Low
- Fix status
- Partial Red Hat: 6 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.
Summary
The systeminformation npm package before 5.33.13 is affected. On FreeBSD, OpenBSD and NetBSD, networkStats() stores interface data in a plain object keyed by the caller-supplied interface name, so a name that matches an inherited property writes into Object.prototype (CWE-1321). An attacker who controls the interface name can pollute the prototype with high attack complexity, which can corrupt application branching, serialization, configuration merging or validation.
Written with Claude Haiku 5.5 from the sources below · 2026-11-02
Description from the CNA
systeminformation is a System and OS information library for node.js. Prior to 5.33.13, networkStats(ifaces) in lib/network.js on FreeBSD, OpenBSD, and NetBSD stores per-interface data in the plain-object _network cache and indexes it with the sanitized caller-controlled interface name. Passing proto causes the inherited Object.prototype value to be used instead of creating an own cache entry, so calcNetworkSpeed() writes rx_bytes, tx_bytes, rx_sec, tx_sec, ms, last_ms, and operstate onto Object.prototype. The polluted property names are fixed and their values come from interface statistics, but inherited-name collisions and enumerable keys can corrupt application branching, serialization, configuration merging, validation, or lookup behavior. This issue is fixed in version 5.33.13.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| sebhildebrandt | systeminformation | before 5.33.13 | 5.33.13 | Patch available | CNA |
| — | systeminformation (npm) | before 5.33.13 | 5.33.13 | Patch available | GHSA-7648-jmwf-vw7j |
- systeminformation Vendorsebhildebrandt Affected before 5.33.13 Fixed in 5.33.13 Patch available CNA
- systeminformation (npm) Vendor— Affected before 5.33.13 Fixed in 5.33.13 Patch available GHSA-7648-jmwf-vw7j
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:systeminformation:systeminformation:*:*:*:*:*:*:*:* | — | — | sebhildebrandt |
- cpe:2.3:a:systeminformation:systeminformation:*:*:*:*:*:*:*:* Versions — — ·sebhildebrandt
Remediation
Upgrade the systeminformation npm package to version 5.33.13. Red Hat lists no available fix plan for Cryostat 4, Multicluster Engine for Kubernetes, Red Hat Advanced Cluster Management for Kubernetes 2, Red Hat Developer Hub 1, Red Hat OpenShift AI (RHOAI) and Self-service automation portal 2.
Written with Claude Haiku 5.5 from the sources below · 2026-11-02
- Fix · CNA systeminformation (sebhildebrandt) Fixed in 5.33.13
- Fix · GHSA-7648-jmwf-vw7j systeminformation (npm) Fixed in 5.33.13 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Cryostat 4 | Affected | No fix yet: Fix deferred |
| Multicluster Engine for Kubernetes | Affected | No fix yet: Fix deferred |
| Red Hat Advanced Cluster Management for Kubernetes 2 | Affected | No fix yet: Fix deferred |
| Red Hat Developer Hub 1 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet: Fix deferred |
| Self-service automation portal 2 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-27 Threatist record created from CVE-2026-116674
- 2026-10-28 Alias added: GHSA-7648-jmwf-vw7j
- 2026-10-28 Fix available: npm/[email protected] · GHSA-7648-jmwf-vw7j
- 2026-10-28 CVSS score added · GHSA-7648-jmwf-vw7j
- 2026-10-28 Weakness changed · GHSA-7648-jmwf-vw7j
- 2026-10-28 5 new references · GHSA-7648-jmwf-vw7j
- 2026-10-28 Priority changed: MEDIUM → LOW
- 2026-10-29 Affected versions changed · Red Hat
- 2026-10-29 CVSS score added · Red Hat
- 2026-11-02 CISA SSVC decision points changed
- 2026-11-02 Priority changed: LOW → MEDIUM
References
Other 4
- https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-7648-jmwf-vw7j
- https://github.com/sebhildebrandt/systeminformation/commit/6ff25a1ebc0b1fdc7a8aa3507e46f22007da2969
- https://github.com/sebhildebrandt/systeminformation/releases/tag/v5.33.13
- https://github.com/sebhildebrandt/systeminformation
More sebhildebrandt vulnerabilities
- TI-2021-04415 Command injection in sebhildebrandt systeminformation KEVCVSS 3.1HIGH 7.8
- TI-2026-37031 systeminformation: OS command injection in networkInterfaces() via interfaces(5) source-directive path on Linux CVSS 4.0HIGH 8.7
- TI-2026-80585 Windows command injection in systeminformation services() CVSS 3.1HIGH 7.8
- TI-2026-32611 systeminformation: Linux command injection in networkInterfaces() via unsanitized NetworkManager connection profile name CVSS 3.1HIGH 7.8
- TI-2024-37295 Command injection vulnerability in getWindowsIEEE8021x (SSID) function in systeminformation CVSS 3.1HIGH 7.8
- TI-2023-22901 systeminformation SSID Command Injection Vulnerability CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-116674 · CVE Program
- CVE-2026-116674 · NVD
- FIRST EPSS
- GHSA-7648-jmwf-vw7j · GitHub Advisory Database · CC BY 4.0
- CVE-2026-116674 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences