CVE-2026-36721

June 10, 2026, 3:16 p.m.

9.8
Critical

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.

Product(s) Impacted

Vendor Product Versions
Bookcars
  • Bookcars
  • 8.3

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-347
Improper Verification of Cryptographic Signature
The product does not verify, or incorrectly verifies, the cryptographic signature for data.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a bookcars bookcars 8.3 / / / / / / /

References

https://github.com/CC-T-454455/Vulnerabilities/tree/master/bookcars/vulnerability-2
https://github.com/CC-T-454455/Vulnerabilities/tree/master/bookcars/vulnerability-2

Tags

[email protected]
CWE-347
2026-06-09
CVE-2026-36721

CVSS Score

9.8 / 10

CVSS Data - 3.1

  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Privileges Required: NONE
  • Scope: UNCHANGED
  • Confidentiality Impact: HIGH
  • Integrity Impact: HIGH
  • Availability Impact: HIGH

    • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

    View Vector String

Timeline

Published: June 9, 2026, 7:17 p.m.
Last Modified: June 10, 2026, 3:16 p.m.

Status : Deferred

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.