CVE-2026-7709 — Janeczku Calibre-Web Vulnerability

title: CVE-2026-7709 - Janeczku Calibre-Web Improper Authorization via generate_auth_token
id: scw-2026-05-03-ai-1
status: experimental
level: high
description: |
  This rule detects attempts to exploit CVE-2026-7709 in Janeczku Calibre-Web. The vulnerability lies in the generate_auth_token function within cps/kobo_auth.py, where manipulation of the 'user_id' argument leads to improper authorization. This detection specifically looks for requests targeting the kobo_auth.py script with the generate_auth_token function and a 'user_id' parameter, indicating a potential exploit attempt.
author: SCW Feed Engine (AI-generated)
date: 2026-05-03
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-7709/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/kobo_auth.py'
      cs-uri-query|contains:
          - 'generate_auth_token'
      cs-uri-query|contains:
          - 'user_id='
      cs-method|exact:
          - 'GET'
  condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse