TI-2026-39116 Aliases CVE-2026-54212 GHSA-3pfv-fvh9-ffrp

TeamDavid: Buffer Overflow in JSON-parsing

HIGH 76CWE-787Published 2026-08-07 · Updated 2026-09-07

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

Tobit Laboratories AG TeamDavid's Webbox application implements an API endpoint that is vulnerable to a buffer overflow condition. By submitting a specially crafted JSON body, such as one that is at least 8 characters long and begins with a number, an unauthenticated attacker can cause the server to crash, resulting in denial of service. Depending on the stack state or if a stack canary can be disclosed through another vulnerability, this buffer overflow could potentially lead to remote code execution and full compromise of the server. 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 Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00665 52nd percentileScored 2026-11-07

Fix Fixed TeamDavid (Tobit Laboratories AG): Rollout 528

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

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-2026-39121 TeamDavid: Stored XSS in web applicationPriority MEDIUM 63
Show all 22 records →

Timeline

2026-10-02 Threatist record created from CVE-2026-54212
2026-10-03 Alias added: GHSA-3pfv-fvh9-ffrp

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-2026-39121 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
TI-2026-39118 TeamDavid: Header Injection through the 'cType' URL 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