A lack of cryptographic signature verification in the validateAccessToken function of bookcars v8.3 allows attackers to bypass authentication via a forged JWT token.

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Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Wed, 10 Jun 2026 17:45:00 +0000

Type Values Removed Values Added
Title Lack of JWT Signature Verification Enables Authentication Bypass in Bookcars 8.3

Wed, 10 Jun 2026 16:30:00 +0000

Type Values Removed Values Added
Title Forged JWT Token Bypass in bookcars v8.3
Weaknesses CWE-346

Wed, 10 Jun 2026 14:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-347
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 10 Jun 2026 11:30:00 +0000

Type Values Removed Values Added
First Time appeared Bookcars
Bookcars bookcars
Vendors & Products Bookcars
Bookcars bookcars

Tue, 09 Jun 2026 21:15:00 +0000

Type Values Removed Values Added
Title Forged JWT Token Bypass in bookcars v8.3
Weaknesses CWE-346

Tue, 09 Jun 2026 18:45:00 +0000

Type Values Removed Values Added
Description A lack of cryptographic signature verification in the validateAccessToken function of bookcars v8.3 allows attackers to bypass authentication via a forged JWT token.
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-06-10T13:55:28.804Z

Reserved: 2026-04-06T00:00:00.000Z

Link: CVE-2026-36721

cve-icon Vulnrichment

Updated: 2026-06-10T13:55:20.637Z

cve-icon NVD

Status : Deferred

Published: 2026-06-09T19:17:42.500

Modified: 2026-06-10T15:16:33.783

Link: CVE-2026-36721

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-10T17:30:36Z

Weaknesses