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CVE-2026-78385— RansomLook Analysis PDF Generation Allows Server-Side Request Forgery and Arbitrary Local File Access

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是RansomLook团队的一款勒索软件监测与分析平台。 RansomLook 2.0.0及之前版本存在服务端请求伪造漏洞，该漏洞源于分析PDF生成功能资源验证不足，可能导致经过身份验证的攻击者嵌入特制的file://或http://资源引用，利用WeasyPrint默认URL获取器访问任意文件或发起服务端请求伪造攻击。

CVSS 8.2 · High EPSS 0.41% · P34

Affected Version Matrix 1

VendorProduct Version RangeStatus
ransomlook ransomlook ≤ 2.0.0 affected
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I. Basic Information for CVE-2026-78385

Vulnerability Information
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Vulnerability Title
RansomLook Analysis PDF Generation Allows Server-Side Request Forgery and Arbitrary Local File Access
Source: CVE Program / CVE List V5
Vulnerability Description
RansomLook contains insufficient resource validation in the analysis PDF generation functionality. Analysis documents are converted from Markdown to HTML and passed to WeasyPrint for PDF rendering. Prior to the fix, WeasyPrint used its default URL fetcher, allowing resource references contained in an analysis to be resolved without restrictions. An authenticated attacker able to create or modify an analysis could embed crafted resource references using schemes such as file:// or http://. When the analysis was subsequently rendered as PDF, WeasyPrint would process these references with the privileges and network access of the RansomLook server. A malicious file:// reference could cause the renderer to access arbitrary files readable by the RansomLook process, potentially exposing sensitive configuration, credentials, or other local data through rendered resources. Network URLs could cause the server to initiate requests to localhost, internal network services, or external systems, resulting in server-side request forgery (SSRF) and potentially bypassing network-level access restrictions. The patch introduces a dedicated WeasyPrint URL fetcher that permits only data: resources, the RansomLook report logo, and files contained within the analysis asset directory. Network resources and filesystem paths outside these explicitly permitted locations are rejected.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
RansomLook 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RansomLook是RansomLook团队的一款勒索软件监测与分析平台。 RansomLook 2.0.0及之前版本存在服务端请求伪造漏洞，该漏洞源于分析PDF生成功能资源验证不足，可能导致经过身份验证的攻击者嵌入特制的file://或http://资源引用，利用WeasyPrint默认URL获取器访问任意文件或发起服务端请求伪造攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

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

II. Public POCs for CVE-2026-78385

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 10324 chars
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III. Intelligence Information for CVE-2026-78385

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Patches & Fixes for CVE-2026-78385 (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-2026-78555 9.4 CRITICAL RansomLook API Key Disclosure Through /admin/apikeys HTML Source
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-2026-78553 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-918

V. Comments for CVE-2026-78385

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