CVE-2020-26245
Prototype Pollution leading to Command Injection in systeminformation
npm package systeminformation before version 4.30.5 is vulnerable to Prototype Pollution leading to Command Injection. The issue was fixed with a rewrite of shell sanitations to avoid prototyper pollution problems. The issue is fixed in version 4.30.5. If you cannot upgrade, be sure to check or sanitize service parameter strings that are passed to si.inetChecksite().
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Prototype Pollution leading to Command Injection in systeminformation
npm package systeminformation before version 4.30.5 is vulnerable to Prototype Pollution leading to Command Injection. The issue was fixed with a rewrite of shell sanitations to avoid prototyper pollution problems. The issue is fixed in version 4.30.5. If you cannot upgrade, be sure to check or sanitize service parameter strings that are passed to si.inetChecksite().
- Record
CVE-2020-26245- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:L - Weakness
- CWE-78, CWE-471
- Updated
- 2026-11-02
EUVDEUVD-2020-1444
npm package systeminformation before version 4.30.5 is vulnerable to Prototype Pollution leading to Command Injection. The issue was fixed with a rewrite of shell sanitations to avoid prototyper pollution problems. The issue is fixed in version 4.30.5. If you cannot upgrade, be sure to check or sanitize service parameter strings that are passed to si.inetChecksite().
- Record
EUVD-2020-1444- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4v2w-h9jm-mqjg
Prototype Pollution in systeminformation
Impact
command injection vulnerability by prototype pollution
Patches
Problem was fixed with a rewrite of shell sanitations to avoid prototyper pollution problems. Please upgrade to version >= 4.30.2
Workarounds
If you cannot upgrade, be sure to check or sanitize service parameter strings that are passed to si.inetChecksite()
For more information
If you have any questions or comments about this advisory:
- Open an issue in systeminformation
- Record
GHSA-4v2w-h9jm-mqjg- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:L - Weakness
- CWE-78, CWE-471
- Updated
- 2026-11-02
NVD
npm package systeminformation before version 4.30.5 is vulnerable to Prototype Pollution leading to Command Injection. The issue was fixed with a rewrite of shell sanitations to avoid prototyper pollution problems. The issue is fixed in version 4.30.5. If you cannot upgrade, be sure to check or sanitize service parameter strings that are passed to si.inetChecksite().
- Record
CVE-2020-26245- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:L - CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-78, CWE-471
- Updated
- 2026-11-02
OSV
npm package systeminformation before version 4.30.5 is vulnerable to Prototype Pollution leading to Command Injection. The issue was fixed with a rewrite of shell sanitations to avoid prototyper pollution problems. The issue is fixed in version 4.30.5. If you cannot upgrade, be sure to check or sanitize service parameter strings that are passed to si.inetChecksite().
- Record
CVE-2020-26245- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2020-26245
npm package systeminformation before version 4.30.5 is vulnerable to Prototype Pollution leading to Command Injection. The issue was fixed with a rewrite of shell sanitations to avoid prototyper pollution problems. The issue is fixed in version 4.30.5. If you cannot upgrade, be sure to check or sanitize service parameter strings that are passed to si.inetChecksite().
- Record
DEBIAN-CVE-2020-26245- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-4v2w-h9jm-mqjg
Prototype Pollution in systeminformation
Impact
command injection vulnerability by prototype pollution
Patches
Problem was fixed with a rewrite of shell sanitations to avoid prototyper pollution problems. Please upgrade to version >= 4.30.2
Workarounds
If you cannot upgrade, be sure to check or sanitize service parameter strings that are passed to si.inetChecksite()
For more information
If you have any questions or comments about this advisory:
- Open an issue in systeminformation
- Record
GHSA-4v2w-h9jm-mqjg- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:L - Weakness
- CWE-471, CWE-78
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
systeminformationnpm |
before 4.30.5 | 4.30.5 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-26245 is a high vulnerability (CVSS 8.1) in Sebhildebrandt Systeminformation, published November 27, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.23%, the 82nd percentile. Fixed in systeminformation 4.30.5.
References
github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-4v2w-h9jm-mqjg
nvd.nist.gov/vuln/detail/CVE-2020-26245
security-tracker.debian.org/tracker/CVE-2020-26245