What’s Vulnerable › Vulnerabilities

CVE-2026-54215: TeamDavid: Open Redirect via the 'replyUrl' parameter

• Severity: medium (CVSS 5.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-07 · updated 2026-10-24
• Weakness: CWE-601

Description

Tobit Laboratories AG TeamDavid's Webbox contains an open redirect vulnerability via the “replyUrl” parameter. An attacker can exploit this vulnerability to craft a URL within the application that, when visited, redirects the user’s browser to an arbitrary third-party site. This can be abused for phishing attacks, where users receive a trusted domain link but are redirected to a phishing website. 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.

Affected products

• Tobit Laboratories AG TeamDavid: before Rollout 528 — fixed in Rollout 528

How to fix

Upgrade to a fixed version: Tobit Laboratories AG TeamDavid Rollout 528. Check the vendor advisory for mitigations.

References

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

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