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PatchSiren cyber security CVE debrief

CVE-2026-36720 bookcars CVE debrief

CVE-2026-36720 is a high-severity vulnerability in bookcars v8.3 that allows authenticated attackers to escalate privileges from user to admin by modifying their user type. The vulnerability has a CVSS score of 8.1 and was published on [cvePublishedAt](https://www.cve.org/CVERecord?id=CVE-2026-36720).

Vendor
bookcars
Product
bookcars
CVSS
HIGH 8.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-09
Advisory published
2026-06-09
Advisory updated
2026-06-09

Who should care

Administrators and users of bookcars v8.3 should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability is caused by insecure permissions in bookcars v8.3, which allows authenticated attackers to escalate privileges from user to admin by modifying their user type. The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Defensive priority

HIGH

Recommended defensive actions

  • Update bookcars to the latest version
  • Restrict user type modification to authorized administrators
  • Monitor user activity and privilege escalation attempts

Evidence notes

The vulnerability was reported by an unknown source and is listed in the NVD database. [nvd](https://nvd.nist.gov/vuln/detail/CVE-2026-36720) The CVE record can be found at [cve-org](https://www.cve.org/CVERecord?id=CVE-2026-36720). Additional information can be found at [ref-4](https://github.com/CC-T-454455/Vulnerabilities/tree/master/bookcars/vulnerability-3).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-36720 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-36720

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-36720 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-36720

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.