CVEssebhildebrandtCVE-2026-116674Published Oct 27, 16:40 · Updated Oct 27, 16:40 UTC
6.5
MediumCVSS 3.1 · from GitHub_M
CVE-2026-116674

systeminformation: Prototype pollution in `networkStats()` via the interface name

systeminformation · Prototype pollution · CWE-1321
Affectedsysteminformation
FixNo fix listed yet.
PublishedOct 27, 16:40 · GitHub_M
ScoredOct 27 · 6.5 · GitHub_M
Exploit code publicNone known · checked 21:18 UTC
ExploitedNone known · CISA KEV checked 22:08 UTC

What we know

No known exploitation. CISA KEV, checked 22:08 UTC.
No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 21:18 UTC.
An attacker only needs network access to the target. No login needed. CVSS: network, no privileges.
It only works under certain conditions, which makes it harder to pull off. CVSS: high attack complexity.
A successful attack can change data. CVSS impact.

Description

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.

From GitHub_M

Affected and fixed versions

ProductAffectedFixed insysteminformation< 5.33.13–

Exploit code

Exploit-DBnone knownMetasploitnone knownNucleinone known

References

github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-7648-jmwf-vw7j · github.comrefsource_CONFIRMgithub.com/sebhildebrandt/systeminformation/commit/6ff25a1ebc0b1fdc7a8aa3507e46f22007da2969 · github.comrefsource_MISCgithub.com/sebhildebrandt/systeminformation/releases/tag/v5.33.13 · github.comrefsource_MISC

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