RansomLook up to 2.0.0 Configuration Editor config/generic.json improper authorization

Summaryinfo

A vulnerability, which was classified as critical, was found in RansomLook up to 2.0.0. Affected is an unknown function of the file config/generic.json of the component Configuration Editor. Executing a manipulation can lead to improper authorization. This vulnerability is registered as CVE-2026-78387. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability has been found in RansomLook up to 2.0.0 and classified as critical. This vulnerability affects some unknown functionality of the file config/generic.json of the component Configuration Editor. The manipulation with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

RansomLook contains an authorization weakness in the web-based configuration editor exposed through the /admin/config endpoint. The endpoint requires an authenticated session but does not perform an explicit privilege or administrator authorization check before allowing access to configuration-management functionality. An authenticated low-privileged user able to access the endpoint can submit crafted configuration values that are written directly to the application's config/generic.json file. The affected functionality permits modification of configuration sections including notification, LDAP, SMTP, and general application settings. Successful exploitation could therefore allow an attacker to alter security-sensitive application behavior, redirect integrations or notifications, modify authentication-related configuration, disrupt external services, or render the RansomLook installation unavailable. The configuration editor also operated on a configuration file containing sensitive values such as passwords, tokens, secrets, and API keys. Although the affected version contains logic intended to prevent recognized secret values from being returned to the browser, exposing configuration management through insufficiently authorized web functionality significantly increases the impact of a compromised or low-privileged account. The patch resolves the issue by completely removing the /admin/config route and associated configuration-editing interface, preventing application configuration from being modified through the web UI.

The advisory is available at github.com. This vulnerability was named CVE-2026-78387 since 08/24/2026. The exploitation appears to be easy. The attack can be initiated remotely. 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 08/24/2026). This vulnerability is assigned to T1548.002 by the MITRE ATT&CK project.

By approaching the search of inurl:config/generic.json it is possible to find vulnerable targets with Google Hacking.

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

Name

• RansomLook

Version

• 2.0

Website

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

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

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