How severe is CVE-2026-40584?

CVE-2026-40584 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-40584 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-40584?

CVE-2026-40584 affects Ransomlook. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-40584?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-40584 have an EU (EUVD) identifier?

Yes. CVE-2026-40584 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24180.

When was CVE-2026-40584 published?

CVE-2026-40584 was published on 2026-04-21 and last updated on 2026-06-17.

CVE-2026-40584

CVE-2026-40584 is a high-severity vulnerability in Ransomlook with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 6.9
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-24180
Weakness: CWE-200
Affected product: Ransomlook
Published: 2026-04-21
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-40584?: 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.
How severe is CVE-2026-40584?: CVE-2026-40584 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-40584 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-40584?: CVE-2026-40584 affects Ransomlook. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-40584?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-40584 have an EU (EUVD) identifier?: Yes. CVE-2026-40584 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24180.
When was CVE-2026-40584 published?: CVE-2026-40584 was published on 2026-04-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ransomlook:ransomlook:*:*:*:*:*:*:*:*

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