Vulnerability-Lookup

FKIE_CVE-2026-26352

Vulnerability from fkie_nvd - Published: 2026-03-30 17:16 - Updated: 2026-04-14 16:34

Severity ?

5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Summary

Smoothwall Express versions prior to 3.1 Update 13 contain a stored cross-site scripting vulnerability in the /cgi-bin/vpnmain.cgi script due to improper sanitation of the VPN_IP parameter. Authenticated attackers can inject arbitrary JavaScript through VPN configuration settings that executes when the affected page is viewed by other users.

References

	URL	Tags
	disclosure@vulncheck.com	https://community.smoothwall.org/forum/viewtopic.php?t=45095	Release Notes, Product
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/smoothwall-express-stored-xss-in-vpnmain-cgi-via-vpn-ip-parameter	Third Party Advisory

Impacted products

Vendor	Product	Version
smoothwall	smoothwall_express	*
smoothwall	smoothwall_express	3.1
smoothwall	smoothwall_express	3.1
smoothwall	smoothwall_express	3.1
smoothwall	smoothwall_express	3.1
smoothwall	smoothwall_express	3.1
smoothwall	smoothwall_express	3.1
smoothwall	smoothwall_express	3.1
smoothwall	smoothwall_express	3.1
smoothwall	smoothwall_express	3.1
smoothwall	smoothwall_express	3.1
smoothwall	smoothwall_express	3.1
smoothwall	smoothwall_express	3.1

JSON

To clipboard

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:smoothwall:smoothwall_express:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F0BC090B-12A9-4A0E-9BD2-EFA56B569432",
              "versionEndIncluding": "3.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:smoothwall:smoothwall_express:3.1:update1:*:*:-:*:*:*",
              "matchCriteriaId": "714B3296-7323-4920-8832-827C697ABED8",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:smoothwall:smoothwall_express:3.1:update10:*:*:-:*:*:*",
              "matchCriteriaId": "07EF8E3A-93A2-4A5A-A077-B692D7B4D92F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:smoothwall:smoothwall_express:3.1:update11:*:*:-:*:*:*",
              "matchCriteriaId": "2B3D4296-EE7C-46FD-A734-419DC0BDFB7A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:smoothwall:smoothwall_express:3.1:update12:*:*:-:*:*:*",
              "matchCriteriaId": "230A2DC9-DE28-4D18-99B8-0567CE99969C",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:smoothwall:smoothwall_express:3.1:update2:*:*:-:*:*:*",
              "matchCriteriaId": "5F0EED85-4850-4303-9529-E45868061C90",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:smoothwall:smoothwall_express:3.1:update3:*:*:-:*:*:*",
              "matchCriteriaId": "0A0D511A-9CBB-4586-BF80-AAC12101B9E4",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:smoothwall:smoothwall_express:3.1:update4:*:*:-:*:*:*",
              "matchCriteriaId": "2999F419-BAF9-4660-8983-BB5A8374450E",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:smoothwall:smoothwall_express:3.1:update5:*:*:-:*:*:*",
              "matchCriteriaId": "83811BB5-B833-4594-823D-C47CB8499DD0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:smoothwall:smoothwall_express:3.1:update6:*:*:-:*:*:*",
              "matchCriteriaId": "E2A35B5F-2BFD-43D2-B0AC-EFCA7A5A8E2C",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:smoothwall:smoothwall_express:3.1:update7:*:*:-:*:*:*",
              "matchCriteriaId": "60C265FF-2CB3-4A44-9017-451D06E2CBE4",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:smoothwall:smoothwall_express:3.1:update8:*:*:-:*:*:*",
              "matchCriteriaId": "E5DB05A8-F012-4258-82B9-B42884F88722",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:smoothwall:smoothwall_express:3.1:update9:*:*:-:*:*:*",
              "matchCriteriaId": "D5EF08B4-276D-4EE1-A079-3A2E61FED713",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Smoothwall Express versions prior to 3.1 Update 13 contain a stored cross-site scripting vulnerability in the /cgi-bin/vpnmain.cgi script due to improper sanitation of the VPN_IP parameter. Authenticated attackers can inject arbitrary JavaScript through VPN configuration settings that executes when the affected page is viewed by other users."
    },
    {
      "lang": "es",
      "value": "Smoothwall Express versiones anteriores a 3.1 Update 13 contienen una vulnerabilidad de cross-site scripting almacenado en el script /cgi-bin/vpnmain.cgi debido a una sanitizaci\u00f3n inadecuada del par\u00e1metro VPN_IP. Atacantes autenticados pueden inyectar JavaScript arbitrario a trav\u00e9s de la configuraci\u00f3n de VPN que se ejecuta cuando la p\u00e1gina afectada es vista por otros usuarios."
    }
  ],
  "id": "CVE-2026-26352",
  "lastModified": "2026-04-14T16:34:30.427",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 2.7,
        "source": "disclosure@vulncheck.com",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.1,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "LOW",
          "userInteraction": "PASSIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-30T17:16:14.363",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Release Notes",
        "Product"
      ],
      "url": "https://community.smoothwall.org/forum/viewtopic.php?t=45095"
    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.vulncheck.com/advisories/smoothwall-express-stored-xss-in-vpnmain-cgi-via-vpn-ip-parameter"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Primary"
    }
  ]
}

CVE-2026-26352 (GCVE-0-2026-26352)

Vulnerability from cvelistv5 – Published: 2026-03-30 16:49 – Updated: 2026-03-30 18:09

Title

Smoothwall Express < 3.1 Update 13 Stored XSS in vpnmain.cgi via VPN_IP Parameter

Summary

Severity ?

5.1 (Medium)


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

5.4 (Medium)


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

CWE

CWE-79 - Improper neutralization of input during web page generation ('cross-site scripting')

Assigner

VulnCheck

References

URL

Tags

	https://community.smoothwall.org/forum/viewtopic.…	vendor-advisorypatch
	https://www.vulncheck.com/advisories/smoothwall-e…	third-party-advisory

Impacted products

	Vendor	Product	Version
	Smoothwall	Express	Affected: 0 , ≤ 3.1 Update 13 (custom)

Credits

Alex Williams from Pellera Technologies VulnCheck

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-26352",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-30T18:08:28.119085Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-30T18:09:05.294Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Express",
          "repo": "https://sourceforge.net/projects/smoothwall/",
          "vendor": "Smoothwall",
          "versions": [
            {
              "lessThanOrEqual": "3.1 Update 13",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
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          "lang": "en",
          "type": "finder",
          "value": "Alex Williams from Pellera Technologies"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulnCheck"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Smoothwall Express versions prior to 3.1 Update 13 contain a stored cross-site scripting vulnerability in the /cgi-bin/vpnmain.cgi script due to improper sanitation of the VPN_IP parameter. Authenticated attackers can inject arbitrary JavaScript through VPN configuration settings that executes when the affected page is viewed by other users."
            }
          ],
          "value": "Smoothwall Express versions prior to 3.1 Update 13 contain a stored cross-site scripting vulnerability in the /cgi-bin/vpnmain.cgi script due to improper sanitation of the VPN_IP parameter. Authenticated attackers can inject arbitrary JavaScript through VPN configuration settings that executes when the affected page is viewed by other users."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
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          "scenarios": [
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            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
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          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
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      ],
      "problemTypes": [
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          "descriptions": [
            {
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              "description": "CWE-79 Improper neutralization of input during web page generation (\u0027cross-site scripting\u0027)",
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              "type": "CWE"
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          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-30T16:50:41.422Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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      },
      "references": [
        {
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          ],
          "url": "https://community.smoothwall.org/forum/viewtopic.php?t=45095"
        },
        {
          "tags": [
            "third-party-advisory"
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          "url": "https://www.vulncheck.com/advisories/smoothwall-express-stored-xss-in-vpnmain-cgi-via-vpn-ip-parameter"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Smoothwall Express \u003c 3.1 Update 13 Stored XSS in vpnmain.cgi via VPN_IP Parameter",
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  "cveMetadata": {
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    "dateReserved": "2026-02-13T17:28:43.057Z",
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  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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

FKIE_CVE-2026-26352

CVE-2026-26352 (GCVE-0-2026-26352)

Tags

Sightings

Nomenclature