Vulnerability-Lookup

CVE-2026-54208 (GCVE-0-2026-54208)

Vulnerability from cvelistv5 – Published: 2026-08-07 09:45 – Updated: 2026-09-07 12:50

Title

TeamDavid: Arbitrary File Write leading to Stored XSS

Summary

Tobit Laboratories AG TeamDavid's Webbox application is vulnerable to arbitrary file write, allowing an unauthenticated attacker to create or write into existing files on the server with attacker-controlled content. This is possible because user input is written directly to files without proper validation or restriction on file types. As a result, an attacker can create files (e.g., .htm), containing malicious JavaScript code. When a user accesses a file created in this way, stored cross-site scripting is triggered. This issue affects TeamDavid before Rollout 528. Starting with Rollout 528 (June 30, 2026), the affected functionality is disabled by default and the vulnerabilities are therefore no longer exposed through this functionality.

Severity

8.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-07 14:41 UTC

CWE

CWE-20 - Improper input validation
CWE-284 - Improper Access Control

Assigner

NCSC.ch CNA under the mitre root

CNA scorecard B 79/100 over 81 records in the last 180 days details

References

2 references

URL	Tags
https://chayns.net/77892-10814/tapp/763210?postId=11454	release-notes
https://labs.infoguard.ch/posts/22-cves-in-david-…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
Tobit Laboratories AG	TeamDavid	Affected: 0 , < Rollout 528 (custom)	guessed

Credits

Dario Weiss of InfoGuard Labs Lucas Dodgson of InfoGuard Labs

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-54208

Vulnerability from fkie_nvd - Published: 2026-08-07 10:16 - Updated: 2026-10-24 16:10

Severity

8.5 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:H/VA:L/SC:L/SI:H/SA:L

Summary

References

	URL	Tags
	vulnerability@ncsc.ch	https://chayns.net/77892-10814/tapp/763210?postId=11454
	vulnerability@ncsc.ch	https://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative/

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "LOW",
          "subConfidentialityImpact": "LOW",
          "subIntegrityImpact": "HIGH",
          "userInteraction": "PASSIVE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:H/VA:L/SC:L/SI:H/SA:L/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": "LOW",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "vulnerability@ncsc.ch",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-54208",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-07T14:41:23.183708Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-07T10:16:57.740",
  "references": [
    {
      "source": "vulnerability@ncsc.ch",
      "url": "https://chayns.net/77892-10814/tapp/763210?postId=11454"
    },
    {
      "source": "vulnerability@ncsc.ch",
      "url": "https://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative/"
    }
  ],
  "sourceIdentifier": "vulnerability@ncsc.ch",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        },
        {
          "lang": "en",
          "value": "CWE-284"
        }
      ],
      "source": "vulnerability@ncsc.ch",
      "type": "Secondary"
    }
  ]
}

GHSA-9QX3-7V72-8555

Vulnerability from github – Published: 2026-08-07 12:31 – Updated: 2026-09-07 15:33

Details

Severity

8.5 (High)


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

Show details on source website

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To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-54208"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-07T10:16:57Z",
    "severity": "HIGH"
  },
  "details": "Tobit Laboratories AG TeamDavid\u0027s Webbox application is vulnerable to arbitrary file write, allowing an \nunauthenticated attacker to create or write into existing files on the \nserver with attacker-controlled content. This is possible because user \ninput is written directly to files without proper validation or \nrestriction on file types. As a result, an attacker can create files \n(e.g., .htm), containing malicious JavaScript code. When a user accesses\n a file created in this way, stored cross-site scripting is triggered.\u00a0This issue affects TeamDavid through Rollout 524.",
  "id": "GHSA-9qx3-7v72-8555",
  "modified": "2026-09-07T15:33:45Z",
  "published": "2026-08-07T12:31:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54208"
    },
    {
      "type": "WEB",
      "url": "https://chayns.net/77892-10814/tapp/763210?postId=11454"
    },
    {
      "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:P/VC:L/VI:H/VA:L/SC:L/SI:H/SA:L/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"
    }
  ]
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-54208 (GCVE-0-2026-54208)

FKIE_CVE-2026-54208

GHSA-9QX3-7V72-8555

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Nomenclature

Vulnerability timeline

Related by attack behaviour