Vulnerability-Lookup

GHSA-HFXR-WGGC-4CR6

Vulnerability from github – Published: 2026-08-07 21:30 – Updated: 2026-08-07 21:30

Details

A flaw has been found in HKUDS nanobot up to 0.2.1. The impacted element is the function ExecTool._prepare_command of the file nanobot/agent/tools/shell.py of the component Login-shell Environment Handler. Executing a manipulation can lead to information disclosure. The attack requires local access. The exploit has been published and may be used. Upgrading to version 0.3.0 is sufficient to resolve this issue. This patch is called 4525. The affected component should be upgraded. Multiple issues were reported to the project. They reacted with a high level of professionalism and kindness: "The report concerns shell startup files reintroducing environment variables when command execution defaults to a login shell. The default was changed so exec does not use a login shell unless explicitly requested".

Severity

3.3 (Low)


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

1.9 (Low)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-19245"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-07T21:17:27Z",
    "severity": "LOW"
  },
  "details": "A flaw has been found in HKUDS nanobot up to 0.2.1. The impacted element is the function ExecTool._prepare_command of the file nanobot/agent/tools/shell.py of the component Login-shell Environment Handler. Executing a manipulation can lead to information disclosure. The attack requires local access. The exploit has been published and may be used. Upgrading to version 0.3.0 is sufficient to resolve this issue. This patch is called 4525. The affected component should be upgraded. Multiple issues were reported to the project. They reacted with a high level of professionalism and kindness: \"The report concerns shell startup files reintroducing environment variables when command execution defaults to a login shell. The default was changed so exec does not use a login shell unless explicitly requested\".",
  "id": "GHSA-hfxr-wggc-4cr6",
  "modified": "2026-08-07T21:30:39Z",
  "published": "2026-08-07T21:30:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-19245"
    },
    {
      "type": "WEB",
      "url": "https://github.com/HKUDS/nanobot/issues/4518"
    },
    {
      "type": "WEB",
      "url": "https://github.com/HKUDS/nanobot/pull/4525"
    },
    {
      "type": "WEB",
      "url": "https://gist.github.com/YLChen-007/b25f3f185478e0b2cd0e727bf5c5ed9b"
    },
    {
      "type": "WEB",
      "url": "https://github.com/HKUDS/nanobot"
    },
    {
      "type": "WEB",
      "url": "https://github.com/HKUDS/nanobot/releases/tag/v0.3.0"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-19245"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/865117"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/386999"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/386999/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/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-2026-19245 (GCVE-0-2026-19245)

Vulnerability from cvelistv5 – Published: 2026-08-07 20:45 – Updated: 2026-08-07 20:45

Title

HKUDS nanobot Login-shell Environment shell.py ExecTool._prepare_command information disclosure

Summary

Severity

4.8 (Medium)


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

3.3 (Low)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C

3.3 (Low)


                        
                          CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C

CWE

CWE-200 - Information Disclosure
CWE-284 - Improper Access Controls

Assigner

VulDB

References

9 references

URL	Tags
https://vuldb.com/vuln/386999	vdb-entrytechnical-description
https://vuldb.com/vuln/386999/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-19245	third-party-advisory
https://vuldb.com/submit/865117	third-party-advisory
https://github.com/HKUDS/nanobot/issues/4518	issue-tracking
https://gist.github.com/YLChen-007/b25f3f185478e0…	exploit
https://github.com/HKUDS/nanobot/pull/4525	issue-trackingpatch
https://github.com/HKUDS/nanobot/releases/tag/v0.3.0	patch
https://github.com/HKUDS/nanobot/	product

Impacted products

1 product

Vendor	Product	Version
HKUDS	nanobot	Affected: 0.2.0 Affected: 0.2.1 Unaffected: 0.3.0 cpe:2.3:a:nanobot:nanobot::::::::

Credits

Eric-c (VulDB User) VulDB CNA Team

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:nanobot:nanobot:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Login-shell Environment Handler"
          ],
          "product": "nanobot",
          "vendor": "HKUDS",
          "versions": [
            {
              "status": "affected",
              "version": "0.2.0"
            },
            {
              "status": "affected",
              "version": "0.2.1"
            },
            {
              "status": "unaffected",
              "version": "0.3.0"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Eric-c (VulDB User)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw has been found in HKUDS nanobot up to 0.2.1. The impacted element is the function ExecTool._prepare_command of the file nanobot/agent/tools/shell.py of the component Login-shell Environment Handler. Executing a manipulation can lead to information disclosure. The attack requires local access. The exploit has been published and may be used. Upgrading to version 0.3.0 is sufficient to resolve this issue. This patch is called 4525. The affected component should be upgraded. Multiple issues were reported to the project. They reacted with a high level of professionalism and kindness: \"The report concerns shell startup files reintroducing environment variables when command execution defaults to a login shell. The default was changed so exec does not use a login shell unless explicitly requested\"."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 1.7,
            "vectorString": "AV:L/AC:L/Au:S/C:P/I:N/A:N/E:POC/RL:OF/RC:C",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "Information Disclosure",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "Improper Access Controls",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-07T20:45:12.889Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-386999 | HKUDS nanobot Login-shell Environment shell.py ExecTool._prepare_command information disclosure",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/386999"
        },
        {
          "name": "VDB-386999 | CTI Indicators (IOB, IOC, TTP, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/386999/cti"
        },
        {
          "name": "CVE-2026-19245 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-19245"
        },
        {
          "name": "Submit #865117 | HKUDS nanobot 0.2.1 Sensitive Information Exposure via Login Shell Startup Files (CWE-200)",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/865117"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/HKUDS/nanobot/issues/4518"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://gist.github.com/YLChen-007/b25f3f185478e0b2cd0e727bf5c5ed9b"
        },
        {
          "tags": [
            "issue-tracking",
            "patch"
          ],
          "url": "https://github.com/HKUDS/nanobot/pull/4525"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/HKUDS/nanobot/releases/tag/v0.3.0"
        },
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          "tags": [
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          "url": "https://github.com/HKUDS/nanobot/"
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      ],
      "timeline": [
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          "lang": "en",
          "time": "2026-08-07T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-08-07T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-08-07T14:13:01.000Z",
          "value": "VulDB entry last update"
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      ],
      "title": "HKUDS nanobot Login-shell Environment shell.py ExecTool._prepare_command information disclosure",
      "x_generator": [
        "VulDB PVTS v202608"
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-19245",
    "datePublished": "2026-08-07T20:45:12.889Z",
    "dateReserved": "2026-08-07T12:07:40.156Z",
    "dateUpdated": "2026-08-07T20:45:12.889Z",
    "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.

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.

Action not permitted

GHSA-HFXR-WGGC-4CR6

CVE-2026-19245 (GCVE-0-2026-19245)

Tags

Sightings

Nomenclature