Security readout for executives and security teams
Plain-English summary
A vulnerable version of the npm package systeminformation can let attacker-controlled input corrupt JavaScript object behavior and reach command injection paths. The issue is fixed in version 4.30.5. Business risk is highest where applications expose or trust inputs used with si.inetChecksite().
Executive priority
Treat as high priority for environments using affected systeminformation versions in reachable application paths. Patch quickly where the package processes external input. If the package is unused or only receives trusted static values, urgency may be lower but should still be tracked.
Technical view
systeminformation versions before 4.30.5 are affected by prototype pollution that can lead to command injection. The advisory names si.inetChecksite() service parameter strings as the relevant exposure area. The fix rewrote shell sanitization to avoid prototype pollution problems.
Likely exposure
Node.js applications that depend on systeminformation before 4.30.5 are potentially exposed, especially if untrusted or insufficiently checked service parameter strings are passed to si.inetChecksite(). Transitive dependency exposure should be verified through lockfiles or SBOMs.
Exploitation context
The CVSS 3.1 score is 8.1 with network attack vector and no privileges required, but high attack complexity. The provided bundle does not show CISA KEV listing or confirmed active exploitation.
Researcher notes
Evidence supports affected versions below 4.30.5, CWE-471 and CWE-78, and a fix involving shell sanitization rewrite. The source bundle does not provide exploit telemetry, broad product impact, or detailed environmental prerequisites beyond si.inetChecksite() parameter handling.
Mitigation direction
- Upgrade systeminformation to version 4.30.5 or later.
- If upgrade is delayed, check or sanitize si.inetChecksite() service parameter strings.
- Review vendor advisory and release notes for applicable guidance.
- Prioritize internet-facing services that process user-controlled inputs.
Validation and detection
- Check package manifests, lockfiles, and SBOMs for systeminformation versions below 4.30.5.
- Identify all code paths calling si.inetChecksite().
- Confirm service parameter strings are not user-controlled or are properly sanitized.
- Run dependency scanning after upgrade to verify the vulnerable version is absent.
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-471: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupCWE-78: 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-2020-26245 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
- High
- CVSS
- 8.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:L
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:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:L2.25.3Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.1HighVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-4v2w-h9jm-mqjgCVE reference · x_refsource_CONFIRM
- https://github.com/sebhildebrandt/systeminformation/commit/8113ff0e87b2f422a5756c48f1057575e73af016CVE 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.
Modification of Assumed-Immutable Data (MAID)
Modification of Assumed-Immutable Data (MAID) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.