Vulnerability-Lookup

FKIE_CVE-2026-27508

Vulnerability from fkie_nvd - Published: 2026-03-30 17:16 - Updated: 2026-04-14 16:32

Severity ?

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

Summary

Smoothwall Express versions prior to 3.1 Update 13 contain a reflected cross-site scripting vulnerability in the /redirect.cgi endpoint due to improper sanitation of the url parameter. Attackers can craft malicious URLs with javascript: schemes that execute arbitrary JavaScript in victims' browsers when clicked through the unsanitized link.

References

	URL	Tags
	disclosure@vulncheck.com	https://community.smoothwall.org/forum/viewtopic.php?t=45095	Product, Release Notes
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/smoothwall-express-reflected-xss-in-redirect-cgi-via-url-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

{
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    {
      "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
            },
            {
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Smoothwall Express versions prior to 3.1 Update 13 contain a reflected cross-site scripting vulnerability in the /redirect.cgi endpoint due to improper sanitation of the url parameter. Attackers can craft malicious URLs with javascript: schemes that execute arbitrary JavaScript in victims\u0027 browsers when clicked through the unsanitized link."
    },
    {
      "lang": "es",
      "value": "Las versiones de Smoothwall Express anteriores a 3.1 Update 13 contienen una vulnerabilidad de cross-site scripting reflejado en el endpoint /redirect.cgi debido a una sanitizaci\u00f3n inadecuada del par\u00e1metro url. Los atacantes pueden crear URLs maliciosas con esquemas javascript: que ejecutan JavaScript arbitrario en los navegadores de las v\u00edctimas cuando se hace clic en el enlace no sanitizado."
    }
  ],
  "id": "CVE-2026-27508",
  "lastModified": "2026-04-14T16:32:57.800",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
          "version": "3.1"
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        "impactScore": 2.5,
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        "type": "Secondary"
      },
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
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          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
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          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
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          "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": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "LOW",
          "userInteraction": "ACTIVE",
          "valueDensity": "NOT_DEFINED",
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          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
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  "published": "2026-03-30T17:16:15.440",
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      ],
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    },
    {
      "source": "disclosure@vulncheck.com",
      "tags": [
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      ],
      "url": "https://www.vulncheck.com/advisories/smoothwall-express-reflected-xss-in-redirect-cgi-via-url-parameter"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Primary"
    }
  ]
}

CVE-2026-27508 (GCVE-0-2026-27508)

Vulnerability from cvelistv5 – Published: 2026-03-30 16:51 – Updated: 2026-03-31 18:05

Title

Smoothwall Express < 3.1 Update 13 Reflected XSS in redirect.cgi via url Parameter

Summary

Severity ?

5.1 (Medium)


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

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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

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        "metrics": [
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                "id": "CVE-2026-27508",
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                  },
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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-31T17:51:51.058978Z",
                "version": "2.0.3"
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          "shortName": "CISA-ADP"
        },
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      }
    ],
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          "product": "Express",
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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-2026-27508

CVE-2026-27508 (GCVE-0-2026-27508)

Tags

Sightings

Nomenclature