lyric777 Book-Management-System Flask API Endpoint card_id information disclosure

Summaryinfo

A vulnerability classified as problematic was found in lyric777 Book-Management-System. The impacted element is an unknown function of the component Flask API Endpoint. Such manipulation of the argument card_id leads to information disclosure. This vulnerability is uniquely identified as CVE-2026-71241. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in lyric777 Book-Management-System (version unknown). It has been rated as problematic. Affected by this issue is an unknown function of the component Flask API Endpoint. The manipulation of the argument card_id with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

Book-Management-System's Flask API endpoints /student, /record, /books, /find_stu_book, and /find_not_return_book are missing the @login_required decorator that protects sibling routes (/search_student, /storage) in the same file. This allows any unauthenticated remote user to retrieve student PII (name, gender, card validity, debt status) and full book-borrowing history by supplying a card_id. Because card_id values are sequential integers, the entire student database can be enumerated without authentication.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-71241 since 08/05/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/05/2026). This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• lyric777

Name

• Book-Management-System

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CPE 2.2info

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Entryinfo

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