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CVE-2026-78555— RansomLook API Key Disclosure Through /admin/apikeys HTML Source

Quick assessment

Affected
ransomlook ransomlook
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

RansomLook 在经过身份验证的 管理页面的 HTML 源代码中泄露了完整的 API 密钥。虽然界面仅显示每个密钥的简化表示形式，但完整的令牌被嵌入在由“启用/禁用”、“私有访问”和“删除”操作所使用的隐藏表单字段中。 因此，通过检查页面源代码或文档对象模型（DOM）即可恢复 API 凭据。此外，API 凭据还可能因调试代理、浏览器缓存、监控系统或其他中间组件在保留或检查 HTTP 响应体时而被无意泄露。攻击者若获取了其中一个令牌，便可利用该密钥所分配的权限进行认证，从而访问该密钥被授权访问的私有数据。 修补

CVSS 9.4 · Critical
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I. Basic Information for CVE-2026-78555

Vulnerability Information
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Vulnerability Title
RansomLook API Key Disclosure Through /admin/apikeys HTML Source
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的凭证保护机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ransomlook ransomlook 0 ~ 2.0.0 -

II. Public POCs for CVE-2026-78555

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Qwen3.6-35B-A3B · 7920 chars
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III. Intelligence Information for CVE-2026-78555

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Patches & Fixes for CVE-2026-78555 (1)

Same Patch Batch · ransomlook · 2026-08-24 · 13 CVEs total

CVE-2026-78387 9.4 CRITICAL RansomLook Missing Authorization in Web Configuration Editor Allows Application Configurat
CVE-2026-78372 9.2 CRITICAL RansomLook Missing Authorization Allows Disclosure of Private Group and Ransom Note Data
CVE-2026-78370 9.2 CRITICAL RansomLook Unauthenticated Database Export Exposes Private Data
CVE-2026-78369 8.8 HIGH Missing Authentication Allows Unauthorized Creation of Crypto Groups in RansomLook
CVE-2026-78391 8.8 HIGH Stored Cross-Site Scripting via Untrusted Cryptocurrency Address Rendering in RansomLook
CVE-2026-78551 8.8 HIGH RansomLook Login Endpoint Allows Timing-Based Username Enumeration and Unthrottled Authent
CVE-2026-78380 8.7 HIGH Private Group and Market Posts Disclosed Through Public Notification Channels in RansomLoo
CVE-2026-78386 8.7 HIGH Unauthenticated Disclosure of Scraping Credentials and Bypass Configuration via RansomLook
CVE-2026-78381 8.2 HIGH RansomLook Arbitrary File Read via Path Traversal in Post screen Field
CVE-2026-78385 8.2 HIGH RansomLook Analysis PDF Generation Allows Server-Side Request Forgery and Arbitrary Local
CVE-2026-78553 7.0 HIGH Insecure Flask Secret-Key File Permissions Allow Local Administrator Session Forgery in Ra
CVE-2026-78378 6.9 MEDIUM Redis Glob Pattern Injection Allows Unauthorized Enumeration of Private Ransomlook Data

IV. Related Vulnerabilities

Same product: ransomlook
Same vendor: ransomlook
Same weakness: CWE-522

V. Comments for CVE-2026-78555

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