TI-2026-39112 Aliases CVE-2026-54208 GHSA-9qx3-7v72-8555

TeamDavid: Arbitrary File Write leading to Stored XSS

MEDIUM 43CWE-20Published 2026-08-07 · Updated 2026-09-07

Key facts

Attack vector: Network
Privileges required: None
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: Security bypass
Confidentiality · integrity · availability: Low · High · Low
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-284.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0052 44th percentileScored 2026-11-08

Fix Fixed TeamDavid (Tobit Laboratories AG): Rollout 528

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Tobit Laboratories AG	TeamDavid	before Rollout 528	Rollout 528	Patch available	CNA

TeamDavid VendorTobit Laboratories AG Affected before Rollout 528 Fixed in Rollout 528 Patch available CNA

Remediation

Fix · CNA TeamDavid (Tobit Laboratories AG) Fixed in Rollout 528

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-08-07
Tobit Laboratories TeamDavid Rollout 528
22 records Highest priority Priority HIGH 3 HIGH, 10 MEDIUM, 9 LOW
Other records, highest priority first
- TI-2026-39117 TeamDavid: Denial of Service via endpoint 'internalRestart'Priority HIGH 79
- TI-2026-39122 TeamDavid: Weak Cryptography and Insecure Password StoragePriority HIGH 77
- TI-2026-39116 TeamDavid: Buffer Overflow in JSON-parsingPriority HIGH 76
Show all 22 records →

Timeline

2026-10-02 Threatist record created from CVE-2026-54208
2026-10-03 Alias added: GHSA-9qx3-7v72-8555

References

Advisory 1

https://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative/

Other 1

https://chayns.net/77892-10814/tapp/763210?postId=11454

TI-2026-39117 TeamDavid: Denial of Service via endpoint 'internalRestart' CVSS 4.0CRITICAL 9.2
TI-2026-39122 TeamDavid: Weak Cryptography and Insecure Password Storage CVSS 4.0HIGH 8.8
TI-2026-39116 TeamDavid: Buffer Overflow in JSON-parsing CVSS 4.0CRITICAL 9.5
TI-2026-39121 TeamDavid: Stored XSS in web application CVSS 4.0MEDIUM 5.3
TI-2026-39120 TeamDavid: Reflected Cross Site Scripting (XSS) via the 'EntryInfo' parameter CVSS 4.0MEDIUM 5.3
TI-2026-39119 TeamDavid: Open Redirect via the 'replyUrl' parameter CVSS 4.0MEDIUM 5.3

See all 21 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences