RCE in Sebhildebrandt Systeminformation
CVE-2026-50289
systeminformation is a System and OS information library for node.js. Prior to 5.31.7, networkInterfaces() on Linux is vulnerable to OS command injection through the Debian/Ubuntu interfaces(5) source directive because lib/network.js checkLinuxDCHPInterfaces() reads /etc/network/interfaces, extracts a source <path> token from file content, and interpolates it unquoted into cat ${file} 2> /dev/null | grep 'iface\|source' executed by execSync(cmd, util.execOptsLinux), allowing a path containing shell metacharacters to execute commands in any process that calls networkInterfaces(), including via getStaticData() and getAllData(). This issue is fixed in version 5.31.7.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.036 (89.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.036 · change: +0.014
Affected products
- Sebhildebrandt Systeminformation — versions < 5.31.7
- Systeminformation
Weakness classification (CWE)
References
- github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-5xpp-75jx-… (Exploit, Mitigation, Vendor Advisory)
- github.com/sebhildebrandt/systeminformation/commit/bbfddde48672d0ee124fefdb3cb4… (Patch)
- github.com/sebhildebrandt/systeminformation/releases/tag/v5.31.7 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-50289?
- CVE-2026-50289 is a high-severity vulnerability in Sebhildebrandt Systeminformation, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-07-17.
- How severe is CVE-2026-50289?
- High severity. CVSS v3 base score is 8.8 out of 10.