CVE-2026-116674: systeminformation has prototype pollution in `networkStats()` via the interface name
networkStats() keeps a per interface cache for computing rx_sec / tx_sec between calls.
The cache is a plain JavaScript object and is indexed with the interface name the caller
supplied. Passing the name __proto__ makes every cache write land on Object.prototype
instead of the cache, polluting every object in the Node.js process.
An application is affected if it passes untrusted input as the ifaces argument of
si.networkStats() and runs on FreeBSD, OpenBSD or NetBSD.
References
- github.com/advisories/GHSA-7648-jmwf-vw7j
- github.com/sebhildebrandt/systeminformation/commit/6ff25a1ebc0b1fdc7a8aa3507e46f22007da2969
- github.com/sebhildebrandt/systeminformation/releases/tag/v5.33.13
- github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-7648-jmwf-vw7j
- nvd.nist.gov/vuln/detail/CVE-2026-116674
Code Behaviors & Features
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