Vulnerability-Lookup

GHSA-V8Q6-F954-39GQ

Vulnerability from github – Published: 2026-08-07 12:31 – Updated: 2026-08-07 12:31

Details

Memory Leak to an Unauthorized Actor vulnerability in Tobit Laboratories AG TeamDavid's Webbox allows reading of sensitive information. When accessing the URL “/.well-known/mta-sts.”, the application responds with memory. By repeatedly requesting this endpoint, an attacker can access sensitive information, including user passwords. Exploitation does not require authentication. This issue affects TeamDavid through Rollout 524.

Severity

9.2 (Critical)


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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-54203"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-07T10:16:57Z",
    "severity": "CRITICAL"
  },
  "details": "Memory Leak to an Unauthorized Actor vulnerability in Tobit Laboratories AG TeamDavid\u0027s Webbox allows reading of sensitive information. When accessing the URL \u201c/.well-known/mta-sts.\u201d, the application responds\n with memory. By repeatedly \nrequesting this endpoint, an attacker can access sensitive \ninformation,\u00a0including user passwords. Exploitation does not require \nauthentication.\u00a0This issue affects TeamDavid through Rollout 524.",
  "id": "GHSA-v8q6-f954-39gq",
  "modified": "2026-08-07T12:31:58Z",
  "published": "2026-08-07T12:31:58Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54203"
    },
    {
      "type": "WEB",
      "url": "https://david.tobit.software/releasenotes"
    },
    {
      "type": "WEB",
      "url": "https://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/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-2026-54203 (GCVE-0-2026-54203)

Vulnerability from cvelistv5 – Published: 2026-08-07 09:44 – Updated: 2026-08-07 09:44

Title

TeamDavid: Memory Leak leaking sensitive information

Summary

Severity

9.2 (Critical)


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

CWE

CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor

Assigner

NCSC.ch

References

2 references

URL	Tags
https://david.tobit.software/releasenotes	release-notes
https://labs.infoguard.ch/posts/22-cves-in-david-…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Tobit Laboratories AG	TeamDavid	Affected: 0 , ≤ Rollout 524 (custom)

Credits

Dario Weiss of InfoGuard Labs

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "Webbox"
          ],
          "product": "TeamDavid",
          "vendor": "Tobit Laboratories AG",
          "versions": [
            {
              "lessThanOrEqual": "Rollout 524",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Dario Weiss of InfoGuard Labs"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Memory Leak to an Unauthorized Actor vulnerability in Tobit Laboratories AG TeamDavid\u0027s Webbox allows reading of sensitive information. When accessing the URL \u201c/.well-known/mta-sts.\u201d, the application responds\n with memory. By repeatedly \nrequesting this endpoint, an attacker can access sensitive \ninformation,\u0026nbsp;including user passwords. Exploitation does not require \nauthentication.\u0026nbsp;This issue affects TeamDavid through Rollout 524."
            }
          ],
          "value": "Memory Leak to an Unauthorized Actor vulnerability in Tobit Laboratories AG TeamDavid\u0027s Webbox allows reading of sensitive information. When accessing the URL \u201c/.well-known/mta-sts.\u201d, the application responds\n with memory. By repeatedly \nrequesting this endpoint, an attacker can access sensitive \ninformation,\u00a0including user passwords. Exploitation does not require \nauthentication.\u00a0This issue affects TeamDavid through Rollout 524."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-131",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-131 Resource Leak Exposure"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 9.2,
            "baseSeverity": "CRITICAL",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-07T09:44:13.505Z",
        "orgId": "455daabc-a392-441d-aa46-37d35189897c",
        "shortName": "NCSC.ch"
      },
      "references": [
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://david.tobit.software/releasenotes"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative/"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "TeamDavid: Memory Leak leaking sensitive information",
      "x_generator": {
        "engine": "Vulnogram 1.0.2"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "455daabc-a392-441d-aa46-37d35189897c",
    "assignerShortName": "NCSC.ch",
    "cveId": "CVE-2026-54203",
    "datePublished": "2026-08-07T09:44:13.505Z",
    "dateReserved": "2026-06-12T09:32:44.531Z",
    "dateUpdated": "2026-08-07T09:44:13.505Z",
    "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-V8Q6-F954-39GQ

CVE-2026-54203 (GCVE-0-2026-54203)

Tags

Sightings

Nomenclature