​Paweł Zdunek

Edito CMS is vulnerable to improper cryptographic signature verification in the JWT refresh logic. An authenticated low-privilege user can submit self-crafted​ ​JWT​ containing​ ​an existing user​ ​identifier and, due to the lack of signature validation,​​  obtain​ ​a ​​valid,​​ fully-signed​​ session ​​token​​ for​​ any ​​account ​​in​ ​the​ ​system. This allows the attacker to impersonate any user, including administrators. This issue was fixed in version 5.10.2607.  Hotfixes for older versions (5.8) have also been released.

Edito CMS is vulnerable to Dynamic LINQ injection. Due to improper input validation, an authenticated attacker can inject conditional expressions into the sort parameter of paginated administrative endpoints. Analyzing the returned result order allows the attacker to extract value of any field character by character, leading to potential exposure of sensitive data. This issue was fixed in version 5.10.2607.  Hotfixes for older versions (5.8) have also been released.

Edito CMS is vulnerable to Stored Cross-Site Scripting (XSS). Due to improper input validation, an authenticated attacker can inject malicious scripts into givenName and surname parameters via the /api/auth/profile endpoint. When an administrator visits the admin changelog logs, the injected script is automatically executed, in his browser. This issue was fixed in version 5.10.2607.  Hotfixes for older versions (5.8) have also been released.

Edito CMS is vulnerable to Stored XSS via content parameter in Tiny editor functionality. Authenticated attacker can inject arbitrary HTML and JS into website, which will be rendered/executed when user tries to edit changed entry. This issue was fixed in version 5.10.2607.  Hotfixes for older versions (5.8) have also been released.

Edito CMS is vulnerable to Stored XSS in avatar upload functionality. Authenticated attacker can inject arbitrary HTML and JS into website, which will be rendered/executed when visiting an URL leading to a edited avatar. This issue was fixed in version 5.10.2607.  Hotfixes for older versions (5.8) have also been released.

Edito CMS restricts the ability to upload files via the UI to specific file types. However, an avatar upload functionality allows an attacker to upload files of any type and extension without restriction. This issue was fixed in version 5.10.2607.  Hotfixes for older versions (5.8) have also been released.

Edito CMS sends JWT token via GET requests. This allows a local attacker with access to browser history to obtain valid JWT token and perform action on behalf of the victim. The token is valid for only short period of time; after that time, it expires and can no longer be used. The vendor assessed the likelihood of exploitation as very low and determined that a fix is not necessary.

Edito CMS deserializes JSON data without further validation. A user (even an administrator) cannot exploit this vulnerability through the application's normal functionality. An attacker who could modify cache entries or inject them could execute code on the server. This issue was fixed in version 5.10.2607.  Hotfixes for older versions (5.8) have also been released.