CVE-2026-40584 RansomLook - Improper Filtering of Private Location Entries in API Endpoints Leads to Information Exposure
Attackers can access private location entries via API due to improper filtering, exposing non-public information.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-40584?
CVE-2026-40584 is a medium-severity vulnerability in RansomLook, published on 21 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
RansomLook is a tool to monitor Ransomware groups and markets and extract their victims. Prior to 1.9.0, the API in the affected application improperly filters private location entries in website/web/api/genericapi.py. Because the code removes elements from a list while iterating over it, entries marked as private may be unintentionally retained in API responses, allowing unauthorized disclosure of non-public location information. This vulnerability is fixed in 1.9.0.
Weakness: CWE-200
Which versions are affected by CVE-2026-40584?
It affects 1 product.
Products include Ransomlook Ransomlook.
How do I fix CVE-2026-40584?
No fix has been published for CVE-2026-40584 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-40584 being exploited?
There is no known exploitation of CVE-2026-40584 in the wild and no public exploit code.
Sources
Also known as GHSA-hv66-vcqc-v87c.