CVE-2026-78387Network attack vector

Configuration modification via unchecked web editor authorization

Published Aug 24, 2026 · Updated Aug 24, 2026

Missing authorization in RansomLook 2.0.0 and earlier allows remote authenticated users to modify application configuration. The /admin/config handler relies only on login_required, accepts submitted section and scalar values, and writes them directly to config/generic.json without an administrator authorization check. Any authenticated low-privileged account that can reach the endpoint can alter LDAP, SMTP, notification, or general settings, redirect integrations, disrupt services, or make the installation unavailable.

CVSS severity9.4
Critical
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in RansomLook 2.0.0 and earlier allows remote authenticated users to modify application configuration. The /admin/config handler relies only on login_required, accepts submitted section and scalar values, and writes them directly to config/generic.json without an administrator authorization check. Any authenticated low-privileged account that can reach the endpoint can alter LDAP, SMTP, notification, or general settings, redirect integrations, disrupt services, or make the installation unavailable.

The record

CVE
CVE-2026-78387
Published
Aug 24, 2026
Updated
Aug 24, 2026
Vendor
RansomLook
Product
RansomLook
Classifications
CWE-862, CAPEC-122, T1565.001
Attack vector
network
Privileges
authenticated

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

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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 privilegesauthenticated

What is affected?

RansomLook · RansomLookversion=0 <=2.0.0

Published CVSS scores

9.4CIRCLCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
CAPEC-122Privilege Abuse
T1565.001Stored Data Manipulation

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

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Your stack

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