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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00034.

Exploitation poc

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
janeczku Calibre-Web affected
Version Status Constraints
0.6.0 affected —
0.6.1 affected —
0.6.2 affected —
0.6.3 affected —
0.6.4 affected —
0.6.5 affected —
0.6.6 affected —
0.6.7 affected —
0.6.8 affected —
0.6.9 affected —
0.6.10 affected —
0.6.11 affected —
0.6.12 affected —
0.6.13 affected —
0.6.14 affected —
0.6.15 affected —
0.6.16 affected —
0.6.17 affected —
0.6.18 affected —
0.6.19 affected —
0.6.20 affected —
0.6.21 affected —
0.6.22 affected —
0.6.23 affected —
0.6.24 affected —
0.6.25 affected —
0.6.26 affected —

No data.

No data.

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Vendors Products
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Project Subscriptions

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Calibre-web Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://drive.google.com/drive/folders/1rosrcfxcHrQM7_GOiBwzY_GnCfXoFuVR?usp=drive_link cve-icon cve-icon
https://vuldb.com/submit/805823 cve-icon cve-icon
https://vuldb.com/vuln/360885 cve-icon cve-icon
https://vuldb.com/vuln/360885/cti cve-icon cve-icon
History

Mon, 04 May 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Sun, 03 May 2026 23:15:00 +0000

Type Values Removed Values Added
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.
Title janeczku Calibre-Web Endpoint kobo_auth.py generate_auth_token improper authorization
First Time appeared Janeczku
Janeczku calibre-web
Weaknesses CWE-266
CWE-285
CPEs cpe:2.3:a:janeczku:calibre-web:*:*:*:*:*:*:*:*
Vendors & Products Janeczku
Janeczku calibre-web
References
Metrics cvssV2_0

{'score': 6.5, 'vector': 'AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 6.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-05-04T17:50:31.376Z

Reserved: 2026-05-03T07:35:23.631Z

Link: CVE-2026-7709

cve-icon Vulnrichment

Updated: 2026-05-04T16:26:21.527Z

cve-icon NVD

Status : Deferred

Published: 2026-05-03T23:16:42.383

Modified: 2026-05-05T19:11:29.130

Link: CVE-2026-7709

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-04T00:30:32Z

Weaknesses