Vulnerability · Published Apr 21, 2026 · Assigned by GitHub_M

CVE-2026-40584RansomLook - Improper Filtering of Private Location Entries in API Endpoints Leads to Information Exposure

Medium 6.9

In plain English

A medium-severity information exposure in RansomLook from RansomLook. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).

Severity (CVSS 4.0)6.9Medium

Exploit odds (30 days)0.3%top 79.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
RansomLook	RansomLook	< 1.9.0

Weakness: CWE-200 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

References

https://github.com/RansomLook/RansomLook/security/advisories/GHSA-hv66-vcqc-v87c x_refsource_CONFIRM
https://vulnerability.circl.lu/vuln/gcve-1-2026-0025 x_refsource_MISC