CVE-2026-7709
Deferred Deferred - Pending Action
Authentication Bypass in Calibre-Web via Kobo Auth Token

Publication date: 2026-05-03

Last updated on: 2026-05-03

Assigner: VulDB

Description
A vulnerability was identified in janeczku Calibre-Web up to 0.6.26. The impacted element is the function generate_auth_token of the file cps/kobo_auth.py of the component Endpoint. Such manipulation of the argument user_id leads to improper authorization. The attack may be launched remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
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Meta Information
Published
2026-05-03
Last Modified
2026-05-03
Generated
2026-06-16
AI Q&A
2026-05-04
EPSS Evaluated
2026-06-14
NVD
CVE-2026-7709
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
janeczku calibre-web to 0.6.26 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-285 The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.
CWE-266 A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.
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Impact Analysis

The vulnerability allows an attacker to manipulate authorization remotely, potentially gaining unauthorized access to resources or actions within the affected system. This could lead to unauthorized information disclosure, modification, or other impacts depending on the privileges gained.

Executive Summary

This vulnerability exists in janeczku Calibre-Web up to version 0.6.26, specifically in the function generate_auth_token within the cps/kobo_auth.py file. It involves improper authorization caused by manipulation of the user_id argument. An attacker can exploit this remotely to bypass authorization controls.

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