Security readout for executives and security teams
Plain-English summary
This CVE affects the Node.js systeminformation package. Versions before 4.26.2 could allow command injection, meaning unsafe input could be interpreted as an operating system command. The published score is medium, but affected applications should still upgrade because command injection can expose sensitive host data.
Executive priority
Prioritize in normal vulnerability remediation cycles unless the package is exposed in sensitive host-monitoring workflows. Upgrade is straightforward and should be scheduled promptly, but the available evidence does not support emergency treatment or active-exploitation claims.
Technical view
CVE-2020-26300 is CWE-77 command injection in sebhildebrandt/systeminformation before 4.26.2. The CVSS 3.1 vector is 5.9, local attack vector, high complexity, no privileges, no user interaction, changed scope, and high confidentiality impact. The advisory states the issue was fixed in 4.26.2 with shell string sanitation.
Likely exposure
Exposure is limited to Node.js applications or tools that directly or transitively install systeminformation below 4.26.2. Risk is most relevant where affected package functionality is reachable in deployed environments. The bundle does not identify specific downstream products or vulnerable call paths.
Exploitation context
The source bundle does not show active exploitation, and KEV is false. The CVSS vector indicates local attack conditions and high complexity, with confidentiality impact but no stated integrity or availability impact. No exploit steps are provided or needed for validation.
Researcher notes
Evidence is sufficient for affected package and fixed version, but incomplete for vulnerable functions, exploit prerequisites beyond CVSS, and downstream impact. Treat this as dependency hygiene plus targeted reachability review, not as proof that every application using the package is exploitable.
Mitigation direction
- Upgrade systeminformation to version 4.26.2 or later.
- Refresh lockfiles and redeploy affected Node.js applications.
- Use dependency overrides only to force a fixed version when direct upgrades are blocked.
- Remove systeminformation if it is unused in production builds.
- Monitor the GitHub advisory and npm package page for vendor guidance.
Validation and detection
- Search package manifests and lockfiles for systeminformation below 4.26.2.
- Check SBOM and dependency scanner output for direct and transitive usage.
- Confirm deployed artifacts resolve systeminformation to 4.26.2 or later.
- Review whether affected functionality is reachable in runtime environments.
- Document any exception with owner, exposure rationale, and remediation date.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-77: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2020-26300 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N1.44Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.9MediumVector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.npmjs.com/package/systeminformationCVE reference · x_refsource_MISC
- https://github.com/advisories/GHSA-fj59-f6c3-3vw4CVE reference · x_refsource_CONFIRM
- https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-fj59-f6c3-3vw4CVE reference · x_refsource_MISC
- https://github.com/sebhildebrandt/systeminformation/commit/bad372e654cdd549e7d786acbba0035ded54c607CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in a Command ('Command Injection')
Improper Neutralization of Special Elements used in a Command ('Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.