Vulnerability-Lookup

GHSA-36F2-4M9X-C736

Vulnerability from github – Published: 2026-07-21 21:32 – Updated: 2026-07-21 21:32

Details

Linknat VOS3000 and VOS2009 through version 2.1.2.0 contain an unauthenticated SQL injection vulnerability that allows remote attackers to execute arbitrary SQL commands by manipulating the name parameter in a POST request to the login endpoint. Attackers can inject malicious SQL through the login form and retrieve injected query results from a subsequent session request, enabling extraction of plaintext credentials and other database content with DBA-level privileges.

Severity

9.8 (Critical)


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

9.3 (Critical)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2016-20096"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-89"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-21T19:17:07Z",
    "severity": "CRITICAL"
  },
  "details": "Linknat VOS3000 and VOS2009 through version 2.1.2.0 contain an unauthenticated SQL injection vulnerability that allows remote attackers to execute arbitrary SQL commands by manipulating the name parameter in a POST request to the login endpoint. Attackers can inject malicious SQL through the login form and retrieve injected query results from a subsequent session request, enabling extraction of plaintext credentials and other database content with DBA-level privileges.",
  "id": "GHSA-36f2-4m9x-c736",
  "modified": "2026-07-21T21:32:39Z",
  "published": "2026-07-21T21:32:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-20096"
    },
    {
      "type": "WEB",
      "url": "https://packetstorm.news/files/id/137159"
    },
    {
      "type": "WEB",
      "url": "https://web.archive.org/web/20160601102456/http://www.wooyun.org/bugs/wooyun-2010-0145458"
    },
    {
      "type": "WEB",
      "url": "https://www.linknat.com"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/linknat-vos3000-vos2009-sql-injection-via-login-jsp"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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-2016-20096 (GCVE-0-2016-20096)

Vulnerability from cvelistv5 – Published: 2026-07-21 18:59 – Updated: 2026-07-22 19:06

Title

Linknat VOS3000/VOS2009 2.1.2.0 SQL Injection via login.jsp

Summary

Severity

9.3 (Critical)


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

9.8 (Critical)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Assigner

VulnCheck

References

4 references

URL	Tags
https://web.archive.org/web/20160601102456/http:/…	technical-descriptionexploit
https://packetstorm.news/files/id/137159	exploit
https://www.linknat.com/	product
https://www.vulncheck.com/advisories/linknat-vos3…	third-party-advisory

Impacted products

2 products

Vendor	Product	Version
Kunshi Network Technology Co., Ltd.	Linknat VOS3000	Affected: 2.1.1.5 (custom) Affected: 2.1.1.8 (custom) Affected: 2.1.2.0 (custom)
Kunshi Network Technology Co., Ltd.	Linknat VOS2009	Affected: 2.1.1.5 (custom) Affected: 2.1.1.8 (custom) Affected: 2.1.2.0 (custom)

Date Public

2026-07-21 00:00

Credits

Osama Khalid Fatullayev Asadbek

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2016-20096",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-22T19:03:38.690246Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-22T19:06:24.973Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "product": "Linknat VOS3000",
          "vendor": "Kunshi Network Technology Co., Ltd.",
          "versions": [
            {
              "status": "affected",
              "version": "2.1.1.5",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "2.1.1.8",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "2.1.2.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linknat VOS2009",
          "vendor": "Kunshi Network Technology Co., Ltd.",
          "versions": [
            {
              "status": "affected",
              "version": "2.1.1.5",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "2.1.1.8",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "2.1.2.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Osama Khalid"
        },
        {
          "lang": "en",
          "type": "reporter",
          "value": "Fatullayev Asadbek"
        }
      ],
      "datePublic": "2026-07-21T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Linknat VOS3000 and VOS2009 through version 2.1.2.0 contain an unauthenticated SQL injection vulnerability that allows remote attackers to execute arbitrary SQL commands by manipulating the name parameter in a POST request to the login endpoint. Attackers can inject malicious SQL through the login form and retrieve injected query results from a subsequent session request, enabling extraction of plaintext credentials and other database content with DBA-level privileges."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 9.3,
            "baseSeverity": "CRITICAL",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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"
            }
          ]
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-89",
              "description": "Improper Neutralization of Special Elements used in an SQL Command (\u0027SQL Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-21T18:59:52.802Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "Archived WooYun Disclosure",
          "tags": [
            "technical-description",
            "exploit"
          ],
          "url": "https://web.archive.org/web/20160601102456/http://www.wooyun.org/bugs/wooyun-2010-0145458"
        },
        {
          "name": "Packet Storm Entry (137159)",
          "tags": [
            "exploit"
          ],
          "url": "https://packetstorm.news/files/id/137159"
        },
        {
          "name": "Vendor Homepage",
          "tags": [
            "product"
          ],
          "url": "https://www.linknat.com/"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/linknat-vos3000-vos2009-sql-injection-via-login-jsp"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Linknat VOS3000/VOS2009 2.1.2.0 SQL Injection via login.jsp",
      "x_generator": {
        "engine": "vulncheck"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2016-20096",
    "datePublished": "2026-07-21T18:59:52.802Z",
    "dateReserved": "2026-07-21T18:49:01.724Z",
    "dateUpdated": "2026-07-22T19:06:24.973Z",
    "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-36F2-4M9X-C736

CVE-2016-20096 (GCVE-0-2016-20096)

Tags

Sightings

Nomenclature