RansomLook up to 2.0.0 Authorization Checks improper authorization

Summaryinfo

A vulnerability was found in RansomLook up to 2.0.0. It has been rated as problematic. This impacts an unknown function of the component Authorization Checks/Web Views/API Endpoints/Compare Functionality. The manipulation leads to improper authorization. This vulnerability is uniquely identified as CVE-2026-78372. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in RansomLook up to 2.0.0. It has been rated as problematic. This issue affects an unknown function of the component Authorization Checks/Web Views/API Endpoints/Compare Functionality. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality. The summary by CVE is:

RansomLook does not consistently enforce authorization checks when accessing groups, markets, and ransom notes marked as private. An unauthenticated or otherwise unauthorized remote attacker can access information associated with private entities through several web views and API endpoints. The affected functionality can disclose private group or market names, ransom-note content, and metadata associated with private groups. The /compare functionality can also be queried directly with the name of a private entity, allowing an unauthorized user to retrieve information such as post counts, mirror totals, and uptime even when the entity is excluded from the normal user interface. The patch explicitly adds a privacy check before returning this information. Ransom-note views, search results, and API endpoints were similarly missing consistent filtering. The fix introduces normalized private-group identifiers and alias handling, then rejects or filters notes associated with private groups before returning them to unauthorized callers. An attacker can exploit the issue remotely without authentication or user interaction, resulting in disclosure of information that was explicitly intended to be restricted to authorized users.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-78372 since 08/24/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

Applying the patch dc92d6d5c076bcdbf3476aca42daf0260e8d99d7 is able to eliminate this problem.

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Productinfo

Name

• RansomLook

Version

• 2.0

Website

• Product: https://github.com/RansomLook/RansomLook/

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CPE 2.2info

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