Vulnerability-Lookup

GHSA-VV2J-M83F-Q33J

Vulnerability from github – Published: 2026-04-09 00:31 – Updated: 2026-04-09 00:31

Details

UAC (Unix-like Artifacts Collector) before 3.3.0-rc1 contains a command injection vulnerability in the placeholder substitution and command execution pipeline where the _run_command() function passes constructed command strings directly to eval without proper sanitization. Attackers can inject shell metacharacters or command substitutions through attacker-controlled inputs including %line% values from foreach iterators and %user% / %user_home% values derived from system files to achieve arbitrary command execution with the privileges of the UAC process.

Severity ?

7.8 (High)


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

8.5 (High)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-40032"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-08T22:16:23Z",
    "severity": "HIGH"
  },
  "details": "UAC (Unix-like Artifacts Collector) before 3.3.0-rc1 contains a command injection vulnerability in the placeholder substitution and command execution pipeline where the _run_command() function passes constructed command strings directly to eval without proper sanitization. Attackers can inject shell metacharacters or command substitutions through attacker-controlled inputs including %line% values from foreach iterators and %user% / %user_home% values derived from system files to achieve arbitrary command execution with the privileges of the UAC process.",
  "id": "GHSA-vv2j-m83f-q33j",
  "modified": "2026-04-09T00:31:59Z",
  "published": "2026-04-09T00:31:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40032"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tclahr/uac/issues/429"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tclahr/uac/pull/443"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tclahr/uac/commit/50ace60e172e38feb78347bdf579311c23eff078"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tclahr/uac/commit/cb95d7166cd47908e1189d9669e43f9a6d3d707f"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tclahr/uac/commit/d0fca5e36d8d6a33a4404f0f6fe92b0424544589"
    },
    {
      "type": "WEB",
      "url": "https://mobasi.ai/sentinel"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/uac-rc1-command-injection-via-placeholder-substitution"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-40032 (GCVE-0-2026-40032)

Vulnerability from cvelistv5 – Published: 2026-04-08 21:35 – Updated: 2026-04-09 19:32 X_Open Source

Title

UAC < 3.3.0-rc1 Command Injection via Placeholder Substitution

Summary

Severity ?

8.5 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

7.8 (High)


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

CWE

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

Assigner

VulnCheck

References

URL

Tags

	https://github.com/tclahr/uac/pull/443	product
	https://github.com/tclahr/uac/commit/cb95d7166cd4…	patch
	https://github.com/tclahr/uac/commit/50ace60e172e…	patch
	https://github.com/tclahr/uac/commit/d0fca5e36d8d…	patch
	https://github.com/tclahr/uac/issues/429	product
	https://mobasi.ai/sentinel	vendor-advisory
	https://www.vulncheck.com/advisories/uac-rc1-comm…	third-party-advisory

Impacted products

	Vendor	Product	Version
	tclahr	UAC	Affected: 0 , ≤ 3.2.0 (semver) Unaffected: 3.3.0-rc1 (semver)

Date Public ?

2026-03-28 00:00

Credits

Mobasi Security Team

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-40032",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-09T19:32:33.886220Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-09T19:32:44.357Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "UAC",
          "vendor": "tclahr",
          "versions": [
            {
              "lessThanOrEqual": "3.2.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "3.3.0-rc1",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Mobasi Security Team"
        }
      ],
      "datePublic": "2026-03-28T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "UAC (Unix-like Artifacts Collector) before 3.3.0-rc1 contains a command injection vulnerability in the placeholder substitution and command execution pipeline where the _run_command() function passes constructed command strings directly to eval without proper sanitization. Attackers can inject shell metacharacters or command substitutions through attacker-controlled inputs including %line% values from foreach iterators and %user% / %user_home% values derived from system files to achieve arbitrary command execution with the privileges of the UAC process."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 8.5,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
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          ]
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
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            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
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          "scenarios": [
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      "problemTypes": [
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          "descriptions": [
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      ],
      "providerMetadata": {
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      },
      "references": [
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          "name": "Pull Request",
          "tags": [
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          ],
          "url": "https://github.com/tclahr/uac/pull/443"
        },
        {
          "name": "Patch Commit #1",
          "tags": [
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          "url": "https://github.com/tclahr/uac/commit/cb95d7166cd47908e1189d9669e43f9a6d3d707f"
        },
        {
          "name": "Patch Commit #2",
          "tags": [
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        },
        {
          "name": "Patch Commit #3",
          "tags": [
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        },
        {
          "name": "Related Issue",
          "tags": [
            "product"
          ],
          "url": "https://github.com/tclahr/uac/issues/429"
        },
        {
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          "tags": [
            "vendor-advisory"
          ],
          "url": "https://mobasi.ai/sentinel"
        },
        {
          "name": "VulnCheck Advisory: UAC \u003c 3.3.0-rc1 Command Injection via Placeholder Substitution",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/uac-rc1-command-injection-via-placeholder-substitution"
        }
      ],
      "tags": [
        "x_open-source"
      ],
      "title": "UAC \u003c 3.3.0-rc1 Command Injection via Placeholder Substitution",
      "x_generator": {
        "engine": "vulncheck"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-40032",
    "datePublished": "2026-04-08T21:35:27.020Z",
    "dateReserved": "2026-04-08T13:36:53.761Z",
    "dateUpdated": "2026-04-09T19:32:44.357Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-VV2J-M83F-Q33J

CVE-2026-40032 (GCVE-0-2026-40032)

Tags

Sightings

Nomenclature