Vulnerability-Lookup

GHSA-C4X3-39WP-WF7P

Vulnerability from github – Published: 2026-07-24 15:33 – Updated: 2026-07-24 15:33

Details

Exposure of Sensitive Information (CWE-200) in LWEB802 browser localStorage in Loytec LWEB-802 before 5.0.8 on all platforms allows an unauthenticated remote attacker to leak stored management credentials via a crafted link.

Severity

7.7 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-55729"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-24T15:18:31Z",
    "severity": "HIGH"
  },
  "details": "Exposure of Sensitive Information (CWE-200)\u00a0in LWEB802 browser `localStorage` in Loytec LWEB-802 before 5.0.8 on all platforms allows an unauthenticated remote attacker to leak stored management credentials via a crafted link.",
  "id": "GHSA-c4x3-39wp-wf7p",
  "modified": "2026-07-24T15:33:04Z",
  "published": "2026-07-24T15:33:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55729"
    },
    {
      "type": "WEB",
      "url": "https://www.loytec.com/support/product-security/advisories/8526-dibt-cve-20260601-0001-exposure-of-credentials-stored-in-browser-local-storage-high"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/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-2026-55729 (GCVE-0-2026-55729)

Vulnerability from cvelistv5 – Published: 2026-07-24 13:59 – Updated: 2026-07-24 14:55

Title

Loytec LWEB802: Exposure of Sensitive Information in browser localStorage

Summary

Exposure of Sensitive Information (CWE-200) in LWEB802 browser `localStorage` in Loytec LWEB-802 before 5.0.8 on all platforms allows an unauthenticated remote attacker to leak stored management credentials via a crafted link.

Severity

7.7 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-200 - Exposure of sensitive information to an unauthorized actor

Assigner

NCSC.ch

References

1 reference

URL	Tags
https://www.loytec.com/support/product-security/a…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Loytec	LWEB-802	Affected: 0 , < 5.0.8 (custom)

Credits

Daniel Hulliger, armasuisse CYD Campus Damian Pfammatter, armasuisse CYD Campus

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-55729",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-24T14:55:21.263680Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-24T14:55:29.967Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "LWEB-802",
          "vendor": "Loytec",
          "versions": [
            {
              "lessThan": "5.0.8",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Daniel Hulliger, armasuisse CYD Campus"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Damian Pfammatter, armasuisse CYD Campus"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
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              "base64": false,
              "type": "text/html",
              "value": "Exposure of Sensitive Information (CWE-200)\u0026nbsp;in LWEB802 browser `localStorage` in Loytec LWEB-802 before 5.0.8 on all platforms allows an unauthenticated remote attacker to leak stored management credentials via a crafted link.\u003cbr\u003e"
            }
          ],
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        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-98",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-98 Phishing"
            }
          ]
        },
        {
          "capecId": "CAPEC-173",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-173 Action Spoofing"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/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"
            }
          ]
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "CWE-200 Exposure of sensitive information to an unauthorized actor",
              "lang": "en",
              "type": "CWE"
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          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-24T13:59:43.912Z",
        "orgId": "455daabc-a392-441d-aa46-37d35189897c",
        "shortName": "NCSC.ch"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.loytec.com/support/product-security/advisories/8526-dibt-cve-20260601-0001-exposure-of-credentials-stored-in-browser-local-storage-high"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Update to LWEB-802 version 5.0.8."
            }
          ],
          "value": "Update to LWEB-802 version 5.0.8."
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Loytec LWEB802: Exposure of Sensitive Information in browser localStorage",
      "x_generator": {
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "455daabc-a392-441d-aa46-37d35189897c",
    "assignerShortName": "NCSC.ch",
    "cveId": "CVE-2026-55729",
    "datePublished": "2026-07-24T13:59:43.912Z",
    "dateReserved": "2026-06-17T09:48:05.268Z",
    "dateUpdated": "2026-07-24T14:55:29.967Z",
    "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.

Action not permitted

GHSA-C4X3-39WP-WF7P

CVE-2026-55729 (GCVE-0-2026-55729)

Tags

Sightings

Nomenclature