CVE-2026-78380Network attack vector

Private post disclosure via omitted entity privacy checks

Published Aug 24, 2026 · Updated Aug 24, 2026

Missing authorization in RansomLook 2.0.0 and earlier allows remote attackers to read private victim posts via public feeds. The appender() path checks only a post's private flag, while misp_feed.refresh_victim() queries group records but not market privacy. Exposure requires enabled outbound notification channels or access to the public MISP feed, and it discloses victim and incident data without altering stored records.

CVSS severity8.7
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Missing authorization in RansomLook 2.0.0 and earlier allows remote attackers to read private victim posts via public feeds. The appender() path checks only a post's private flag, while misp_feed.refresh_victim() queries group records but not market privacy. Exposure requires enabled outbound notification channels or access to the public MISP feed, and it discloses victim and incident data without altering stored records.

The record

CVE
CVE-2026-78380
Published
Aug 24, 2026
Updated
Aug 24, 2026
Vendor
RansomLook
Product
RansomLook
Classifications
CWE-862, CAPEC-115
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

RansomLook · RansomLookversion=0 <=2.0.0

Published CVSS scores

8.7CIRCLCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
CAPEC-115Authentication Bypass

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo