CVE-2026-54214 in TeamDavid
Summary
by MITRE • 08/07/2026
Tobit Laboratories AG TeamDavid's Webbox application is vulnerable to HTTP header injection through the “cType” URL parameter, which allows arbitrary modification of the Content-Type header in HTTP responses. Because the parameter does not properly restrict control characters such as URL-encoded newlines (“%0a”) or colons, attackers can inject additional headers including extra Location headers into the server’s response. This results e.g. in an open redirect vulnerability. This issue affects TeamDavid through Rollout 524.
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Analysis
by VulDB Data Team • 08/07/2026
The vulnerability in Tobit Laboratories AG TeamDavid's Webbox application represents a critical HTTP header injection flaw that stems from inadequate input validation of the "cType" URL parameter. This weakness allows malicious actors to manipulate HTTP response headers by injecting control characters such as URL-encoded newlines (%0a) and colons, which bypass standard sanitization mechanisms. The vulnerability specifically affects the Content-Type header modification functionality within the application's response handling mechanism, creating a pathway for attackers to introduce arbitrary headers into server responses.
The technical implementation of this flaw demonstrates a classic case of insufficient input validation and sanitization practices. When the "cType" parameter is processed without proper filtering of control characters, it enables attackers to inject additional HTTP headers into the response stream. This injection capability extends beyond simple header modification to include the insertion of extra Location headers, which can be leveraged for open redirect attacks. The vulnerability operates at the application layer where HTTP responses are generated, making it particularly dangerous as it can be exploited through web-based attack vectors without requiring special privileges or direct system access.
The operational impact of this vulnerability is significant across multiple threat vectors including open redirect scenarios, cross-site scripting attempts, and potential session manipulation attacks. When attackers successfully inject additional Location headers, they can redirect users to malicious domains while maintaining the appearance of legitimate application behavior. This creates opportunities for phishing attacks, credential theft, and other social engineering exploits that rely on user trust in the application's interface. The vulnerability affects all versions of TeamDavid through Rollout 524, indicating a widespread exposure across the product's deployment base.
Security professionals should recognize this issue as aligning with CWE-113, which specifically addresses HTTP Response Splitting vulnerabilities, and it also relates to ATT&CK technique T1566 for social engineering via open redirects. The attack surface extends beyond simple redirection to include potential header-based exploitation patterns that could compromise application integrity. Organizations should implement immediate mitigation strategies including parameter validation at the input level, sanitization of control characters in URL parameters, and comprehensive header injection testing during security assessments.
Recommended remediation approaches include implementing strict input validation for all URL parameters, particularly those influencing HTTP headers, and deploying web application firewalls with header injection detection capabilities. The fix should enforce proper encoding of special characters and implement a whitelist-based approach for header parameter values. Additionally, organizations should conduct thorough vulnerability assessments to identify other potential injection points within the application's HTTP response handling code and ensure that all URL parameters affecting server responses undergo rigorous sanitization before processing. Regular security testing and code reviews focused on input validation practices will help prevent similar vulnerabilities from emerging in future releases.
The vulnerability demonstrates how seemingly minor parameter handling issues can create substantial security risks when control characters are not properly filtered from user inputs. This type of flaw represents a common pattern in web applications where developers assume that HTTP headers will be handled safely by underlying frameworks without sufficient application-level validation, leaving systems vulnerable to header injection attacks that can be exploited for various malicious purposes including open redirects and session manipulation.