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TI-2026-06791 Aliases CVE-2026-7709GHSA-6xgw-x2hr-63c2

janeczku Calibre-Web Endpoint kobo_auth.py generate_auth_token improper authorization

Priority MEDIUM 57CWE-266Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Privilege escalation, Security bypass
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-266 and CWE-285.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00219 12th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
janeczkuCalibre-Web0.6.0; 0.6.1; 0.6.2; 0.6.3; 0.6.4; 0.6.5; 0.6.6; 0.6.7; 0.6.8; 0.6.9; 0.6.10; 0.6.11; 0.6.12; 0.6.13; 0.6.14; 0.6.15; 0.6.16; 0.6.17; 0.6.18; 0.6.19; 0.6.20; 0.6.21; 0.6.22; 0.6.23; 0.6.24; 0.6.25; 0.6.26—No fix listedCNA
  • Calibre-Web Vendorjaneczku Affected 0.6.0; 0.6.1; 0.6.2; 0.6.3; 0.6.4; 0.6.5; 0.6.6; 0.6.7; 0.6.8; 0.6.9; 0.6.10; 0.6.11; 0.6.12; 0.6.13; 0.6.14; 0.6.15; 0.6.16; 0.6.17; 0.6.18; 0.6.19; 0.6.20; 0.6.21; 0.6.22; 0.6.23; 0.6.24; 0.6.25; 0.6.26 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:janeczku:calibre-web:*:*:*:*:*:*:*:*——janeczku
  • cpe:2.3:a:janeczku:calibre-web:*:*:*:*:*:*:*:* Versions — — ·janeczku

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-7709
  2. 2026-10-03 Alias added: GHSA-6xgw-x2hr-63c2

References

Exploit 1

  • TI-2023-01981 Weak Password Requirements in janeczku/calibre-web CVSS 3.1CRITICAL 9.8
  • TI-2022-02333 Improper Restriction of Excessive Authentication Attempts in janeczku/calibre-web CVSS 3.1CRITICAL 9.8
  • TI-2021-07971 Calibre-web - Admin Account Takeover via Cross-Site Request Forgery (CSRF) CVSS 3.1HIGH 8.8
  • TI-2025-06745 Calibre Web 0.6.24 & Autocaliweb 0.7.0 - Blind C CVSS 4.0MEDIUM 5.9
  • TI-2021-02885 Cross-site Scripting (XSS) in janeczku/calibre-web CVSS 3.1MEDIUM 6.1
  • TI-2024-26178 In janeczku Calibre-Web 0.6.0 to 0.6.21, the edit_book_comments function is vulnerable to… CVSS 3.1MEDIUM 5.4
See all 24 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences