CVE-2026-10295 in Customer Review App
Summary
by MITRE • 06/02/2026
A vulnerability was found in SourceCodester Customer Review App 1.0. Affected by this vulnerability is the function add_review/save_review/get_all_reviews of the file review_app.py. Performing a manipulation of the argument name/comment results in denial of service. The attack requires a local approach. The exploit has been made public and could be used.
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Analysis
by VulDB Data Team • 06/09/2026
This vulnerability resides within the SourceCodester Customer Review App version 1.0, specifically targeting the review_app.py file which handles customer review functionality through three critical endpoints: add_review, save_review, and get_all_reviews. The flaw manifests when attackers manipulate the name and comment arguments passed to these functions, leading to a denial of service condition that effectively renders the application unusable. The vulnerability's local attack requirement suggests that exploitation necessitates physical or network access to the target system, making it less immediately dangerous than remote exploits but still concerning for environments where local access is possible. The fact that a public exploit exists significantly amplifies the risk, as malicious actors can readily leverage this weakness without requiring advanced technical skills or custom development. This type of vulnerability falls under the category of improper input validation, where the application fails to properly sanitize or validate user-supplied data before processing it, creating opportunities for attackers to inject malformed inputs that disrupt normal application operations.
The technical implementation of this vulnerability stems from inadequate parameter validation within the review application's backend logic. When the name and comment arguments are passed to the affected functions, the application likely processes these inputs without sufficient sanitization or length checking, allowing maliciously crafted data to cause the application to crash or become unresponsive. The denial of service occurs because the application's error handling mechanisms are insufficient to deal with malformed inputs, causing the system to enter an unstable state where it cannot properly process legitimate review requests. This pattern of vulnerability aligns with common software weaknesses documented in the CWE database under categories related to input validation and error handling failures. The local nature of the attack means that the exploitation requires either direct system access or a method to execute code on the target machine, potentially through social engineering or by compromising other system components that have local access to the application.
The operational impact of this vulnerability extends beyond simple service disruption, as it can compromise the integrity of the customer review system and potentially affect business operations that depend on user feedback. Organizations using this application may experience complete service outages when attackers exploit this weakness, leading to loss of customer trust and potential revenue impact. The vulnerability also represents a significant security risk for the overall system architecture, as local privilege escalation or lateral movement opportunities may exist if attackers can leverage this denial of service condition as a stepping stone to more serious attacks. The public availability of the exploit increases the attack surface significantly, as any individual with basic technical knowledge can potentially disrupt service. This vulnerability demonstrates poor security practices in application development, particularly concerning the principle of least privilege and proper input sanitization, which are fundamental requirements in secure coding practices according to industry standards.
Mitigation strategies for this vulnerability should focus on implementing robust input validation and error handling mechanisms throughout the application's codebase. The immediate solution involves adding comprehensive parameter validation to all input fields, including length restrictions, character set validation, and proper sanitization of user-supplied data before processing. Developers should implement proper exception handling that prevents malformed inputs from causing application crashes or resource exhaustion. The application should be updated to include rate limiting and input length controls to prevent abuse of the review functionality. Additionally, implementing proper logging and monitoring capabilities will help detect exploitation attempts and provide forensic evidence for incident response activities. Organizations should consider applying security patches or upgrading to newer versions of the application if available, while also implementing network segmentation to limit local access to critical systems. The vulnerability underscores the importance of following secure coding practices and conducting regular security assessments to identify and remediate similar weaknesses in software applications. This type of vulnerability is particularly concerning because it can be exploited without requiring sophisticated attack techniques, making it a high-priority remediation item for any organization utilizing this software.