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CVSS 9.83 sources verified·1 min read
By Lyrie Threat Intelligence·6/10/2026

CRITICAL: CVE-2026-36721 (CVSS 9.8) — multiple products

CVE: CVE-2026-36721

CVSS: 9.8 (3.1) — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: CRITICAL

Status: Critical advisory

Affected

_See vendor advisory_

Summary

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

Verified Sources

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

_Validated by the Lyrie Threat Intelligence Pipeline — 3 independent sources confirmed before publication. No speculation._

Lyrie Verdict

A vulnerability of this severity is exactly what Lyrie's anti-rogue-AI defense is built for: continuous, autonomous monitoring that doesn't wait for human reaction time.

#critical

Validated sources

  1. [1]NVD
  2. [2]GitHub Advisory
  3. [3]MITRE

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