CVE-2026-12071 (GCVE-0-2026-12071)
Vulnerability from cvelistv5 – Published: 2026-08-07 09:40 – Updated: 2026-08-07 09:40
VLAI
EPSS
VEX
Title
TeamDavid: Header Injection leading to Open Redirect via URL-encoded characters
Summary
The Webbox of TeamDavid by Tobit Laboratories AG constructs redirect URLs using user-supplied input,
which is appended to the redirect target in a 302 HTTP response. By
using URL-encoded characters such as “%2e” (representing a dot), an
attacker can manipulate the portion of the URL following the top-level
domain (TLD). If a similar, registerable TLD exists (for example, if
“.com” is the application’s domain, and “.company” is available for
registration), an attacker can craft a URL to redirect users to a
malicious “.company” domain. By using URL-encoded line feeds, it becomes
possible to insert arbitrary response headers in the server's HTTP
response.
This issue affects TeamDavid through Rollout 524.
Severity
CWE
- CWE-601 - URL redirection to untrusted site ('open redirect')
Assigner
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
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"credits": [
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"type": "finder",
"value": "Dario Weiss of InfoGuard Labs"
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{
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"type": "finder",
"value": "Olivier Becker of InfoGuard Labs"
},
{
"lang": "en",
"type": "finder",
"value": "Lucas Dodgson of InfoGuard Labs"
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"value": "\u003cdiv\u003eThe Webbox of TeamDavid by\u0026nbsp;Tobit Laboratories AG\u0026nbsp;constructs redirect URLs using user-supplied input, \nwhich is appended to the redirect target in a 302 HTTP response. By \nusing URL-encoded characters such as \u201c%2e\u201d (representing a dot), an \nattacker can manipulate the portion of the URL following the top-level \ndomain (TLD). If a similar, registerable TLD exists (for example, if \n\u201c.com\u201d is the application\u2019s domain, and \u201c.company\u201d is available for \nregistration), an attacker can craft a URL to redirect users to a \nmalicious \u201c.company\u201d domain. By using URL-encoded line feeds, it becomes\n possible to insert arbitrary response headers in the server\u0027s HTTP \nresponse.\u003c/div\u003e\u003cp\u003eThis issue affects TeamDavid through Rollout 524.\u003c/p\u003e"
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"value": "The Webbox of TeamDavid by\u00a0Tobit Laboratories AG\u00a0constructs redirect URLs using user-supplied input, \nwhich is appended to the redirect target in a 302 HTTP response. By \nusing URL-encoded characters such as \u201c%2e\u201d (representing a dot), an \nattacker can manipulate the portion of the URL following the top-level \ndomain (TLD). If a similar, registerable TLD exists (for example, if \n\u201c.com\u201d is the application\u2019s domain, and \u201c.company\u201d is available for \nregistration), an attacker can craft a URL to redirect users to a \nmalicious \u201c.company\u201d domain. By using URL-encoded line feeds, it becomes\n possible to insert arbitrary response headers in the server\u0027s HTTP \nresponse.\n\n\n\nThis issue affects TeamDavid through Rollout 524."
}
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"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
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"subConfidentialityImpact": "LOW",
"subIntegrityImpact": "LOW",
"userInteraction": "PASSIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
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"url": "https://david.tobit.software/releasenotes"
},
{
"tags": [
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],
"url": "https://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative/"
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"source": {
"discovery": "EXTERNAL"
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"title": "TeamDavid: Header Injection leading to Open Redirect via URL-encoded characters",
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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