CVE-2026-78372: RansomLook authorization bypass in private entities

CVE-2026-78372 · Severity: info · CVSS 5.3 · Published 2026-08-24

RansomLook is an intelligence platform that tracks ransomware groups and their operations, with a feature to mark certain groups, markets, and ransom notes as private to restrict access. An authorization flaw allows unauthenticated users to view private information—including group names, ransom note content, and operational metadata—that should be restricted to authorized users. This could expose sensitive threat intelligence and undermine the platform's access controls.

Technologies: RansomLook. Vendors: RansomLook.

Quick answers

Is CVE-2026-78372 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-78372 being exploited in the wild.
How severe is CVE-2026-78372?
Informational severity, with a CVSS score of 5.3, published 24 August 2026.
Which products and versions are affected?
RansomLook prior to commit dc92d6d5c076bcdbf3476aca42daf0260e8d99d7 (2026-08-23).
Is there a fix for CVE-2026-78372?
A patch was published on 2026-08-23: Fix deployed via commit dc92d6d5c076bcdbf3476aca42daf0260e8d99d7 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-78372 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-78372?
Check whether you run RansomLook at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

RansomLook fails to consistently enforce authorization checks before serving private entities (groups, markets, and ransom notes) through multiple web views and API endpoints. An unauthenticated remote attacker can access restricted content via the /compare endpoint and other API calls without authentication or user interaction. The vulnerability allows extraction of post counts, mirror information, uptime data, and full ransom note content for private entities even when they are filtered from the normal UI. The fix introduces normalized identifiers for private groups and filters private-entity results before returning data to unauthorized callers.

Affected products

  • RansomLook RansomLook prior to commit dc92d6d5c076bcdbf3476aca42daf0260e8d99d7 (2026-08-23)

Timeline

  • 2026-08-24: disclosed
  • 2026-08-23: patched: Fix deployed via commit dc92d6d5c076bcdbf3476aca42daf0260e8d99d7

References

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