Unauthenticated location disclosure via in-loop list mutation
Published Apr 21, 2026 · Updated Apr 21, 2026
Information exposure in RansomLook before 1.9.0 allows remote attackers to read private location entries through API responses. In website/web/api/genericapi.py, the API removes private-marked elements from a list while iterating over that same list, so adjacent entries can escape filtering. No authentication or user interaction is required, and the documented consequence is limited to disclosure of non-public location information.
Summary
What happened
Information exposure in RansomLook before 1.9.0 allows remote attackers to read private location entries through API responses. In website/web/api/genericapi.py, the API removes private-marked elements from a list while iterating over that same list, so adjacent entries can escape filtering. No authentication or user interaction is required, and the documented consequence is limited to disclosure of non-public location information.
The record
- CVE
- CVE-2026-40584
- Published
- Apr 21, 2026
- Updated
- Apr 21, 2026
- Vendor
- RansomLook
- Product
- RansomLook
- Classifications
- CWE-200, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 21, 2026CVE publishedPublication date reported by the CVE source.
- Apr 21, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 1.9.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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