CVE-2026-40584: RansomLook is a tool to monitor Ransomware groups and markets and extract their victims

Q: How do I fix CVE-2026-40584?

ransomlook: upgrade to 1.9.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-40584 being exploited?

CVE-2026-40584 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-40584 affect?

CVE-2026-40584 affects ransomlook. Severity is high (CVSS 7.5). 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 remo

Q: How urgent is CVE-2026-40584?

Priority 36/100. High severity; Remotely exploitable, no login, no user action

Routine

HIGH 7.5REMOTEUPGRADE

CVE-2026-40584 is a high-severity flaw (CVSS 7.5) affecting ransomlook. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 vulnerabil

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 80%)
CISA exploited list	No
Weakness	CWE-200
Published	2026-04-21
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: ransomlook

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-21 17:16 UTCPublished CVE record published
2026-06-17 10:45 UTCUpdated Record last modified

ransomlook ransomlook UPGRADE

Affected: < 1.9.0

Fixed in: 1.9.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ransomlook || rpm -q ransomlook || ransomlook --version

2. UPGRADE to 1.9.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ransomlook

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ransomlook

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-40584?

ransomlook: upgrade to 1.9.0. Exact commands for each OS are on this page.

Is CVE-2026-40584 being exploited?

CVE-2026-40584 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-40584 affect?

CVE-2026-40584 affects ransomlook. Severity is high (CVSS 7.5). 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 remo

How urgent is CVE-2026-40584?

Priority 36/100. High severity; Remotely exploitable, no login, no user action

References

← Back to latest CVEs