ProjectsAndPrograms school-management-system uses predictable credentials by generating student's and teacher's passwords solely from the user’s date of birth (e.g., 12072000 for 12 July 2000). The application does not require or prompt users to change the password upon first login. This behavior allows attackers to easily guess or derive valid credentials, leading to unauthorized account access.

In Slican telephone exchanges secure key is generated in a predictable manner using properties of the telephone exchange which can be obtained without authentication. An unauthenticated attacker can deduce the secure key and obtain admin credentials. This issue was fixed in versions below: - IPx series: version 6.61.0040 - CCT-1668: version 6.56.0430 - MAC-6400: version 6.56.0430 - CXS-0424: vers

`JWT.decode(token, '', true, algorithm: 'HS256')` accepts an attacker-forged token. `OpenSSL::HMAC.digest('SHA256', '', payload)` returns a valid digest under an empty key, and no `raise InvalidKeyError if key.empty?` precondition exists in the HMAC algorithm. ``` JWT.decode(token, "", true, algorithm: 'HS256') -> JWA::Hmac.verify(verification_key: "", ...) -> OpenSSL::HMAC.digest('SHA256',

```go func NewSecretsVerifier(header http.Header, secret string) (SecretsVerifier, error) { hash := hmac.New(sha256.New, []byte(secret)) // raw secret, no precondition } ```

fast-jwt provides fast JSON Web Token (JWT) implementation. Prior to 6.2.4, a critical authentication-bypass vulnerability in fast-jwt's async key-resolver flow allows any unauthenticated attacker to forge arbitrary JWTs that are accepted as authentic. When the application's key resolver returns an empty string (''), for example via the common keys[decoded.header.kid] || '' JWKS-style fallback, fa

Weak credentials in the CashDro 3 web administration panel, version 24.01.00.26, where the platform allows the use of numeric PINs for user authentication. The system supports the use of PIN-based credentials, maintaining compatibility with POS software integrations deployed since 2012. This could allow an attacker to easily perform a brute-force attack against a user and gain access by trying dif