CVE-2026-78555: fallo crítico en ransomlook
RansomLook API Key Disclosure Through /admin/apikeys HTML Source
Publicada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
28Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 9.4epss 0.4%
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:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Productos afectados
ransomlook · ransomlookCVEs relacionadas — ransomlook
En el mismo producto, de las más peligrosas a las menos.
CVE-2026-78386HIGHUnauthenticated Disclosure of Scraping Credentials and Bypass Configuration via RansomLook APIEPSS 0.8%CVE-2026-78370CRITICALRansomLook Unauthenticated Database Export Exposes Private DataEPSS 0.7%CVE-2026-78369HIGHMissing Authentication Allows Unauthorized Creation of Crypto Groups in RansomLookEPSS 0.7%CVE-2026-78372CRITICALRansomLook Missing Authorization Allows Disclosure of Private Group and Ransom Note DataEPSS 0.7%CVE-2026-78551HIGHRansomLook Login Endpoint Allows Timing-Based Username Enumeration and Unthrottled Authentication AttemptsEPSS 0.6%CVE-2026-78381HIGHRansomLook Arbitrary File Read via Path Traversal in Post screen FieldEPSS 0.6%