EUVD Vulnerability Catalog

EUVD-2026-65090

Severity: CRITICAL Base Score: 9.4 CVSS Version: 4.0

Vulnerability Description

RansomLook exposed complete API keys in the HTML source of the authenticated /admin/apikeys administration page. Although the interface displayed only a shortened representation of each key, the full token was embedded in hidden form fields used by the enable/disable, private-access, and delete actions. As a result, API credentials could be recovered by inspecting the page source or DOM. The credentials could also be unintentionally exposed through components that retain or inspect HTTP response bodies, such as debugging proxies, browser caches, monitoring systems, or other intermediaries. An attacker obtaining one of these tokens could subsequently authenticate using the privileges assigned to that key, including access to private data where the key was granted such permissions. The patch removes API keys from subsequent page rendering and replaces them with SHA-256-derived opaque handles. Administrative actions submit only these handles, which are resolved back to the corresponding token on the server. The full API key is therefore disclosed only once, when it is initially created.

CVSS Vector Analysis

Below is the complete, human-readable breakdown of the CVSS metric string: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): High
User Interaction (UI): None
Vulnerability Confidentiality Impact (VC): High
Vulnerability Integrity Impact (VI): High
Vulnerability Availability Impact (VA): High
Subsequent Confidentiality Impact (SC): High
Subsequent Integrity Impact (SI): High
Subsequent Availability Impact (SA): High

Affected Vendors & Systems

Vendor RansomLook

References & Advisory Links

Metadata Profile

Database Authority

European Union Agency for Cybersecurity (ENISA) EUVD

Assigner

CIRCL

EPSS Probability

0

Known Aliases
CVE-2026-78555
Published On

2026-08-24

Last Updated

2026-08-24