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: 2026-06-23 16:16 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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-09 19:32 UTC

CWE

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

Assigner

VulnCheck mitre root

References

7 references

URL	Tags
https://github.com/tclahr/uac/pull/443	issue-tracking
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	issue-tracking
https://mobasi.ai/sentinel	vendor-advisory
https://www.vulncheck.com/advisories/uac-rc1-comm…	third-party-advisory

Impacted products

1 product

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

Date Public

2026-03-28 00:00

Credits

Mobasi Security Team

Show details on NVD website

JSON

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        "metrics": [
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                "id": "CVE-2026-40032",
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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.

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.