CVE-2026-116674

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 63/100
Published: 2026-10-27 Modified: 2026-10-27 First seen: 2026-10-29 Status: active

Attack Surface

Network No Auth No Interaction Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: Unchanged
C: None
I: High
A: Low

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.

Weakness Classification (1)

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

6.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:L

EPSS — Exploitation Probability

0.29%
Raw Score 0.002870
Percentile 21.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00287
2026-10-28
0.00287

Intelligence Sources

mitre ref →
nvd ref →