Insecure permissions in bookcars v8.3 allows authenticated attackers to escalate privileges from user to admin via modifying their user typ…

published 2026-06-09 5 mo ago modified 2026-07-23 3 mo ago also EUVD-2026-35922

cvss: 8.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 16%
public exploits: 0; none known

Insecure permissions in bookcars v8.3 allows authenticated attackers to escalate privileges from user to admin via modifying their user type.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 5 mo ago (2026-06-09)

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/CC-T-454455/Vulnerabilities/tree/master/bookcars/vulnerability-3 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	8.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CNA	3.1	8.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Classification

Weakness

CWE-284 Improper Access Control

References

github.com /CC-T-454455/Vulnerabilities/tree/master/bookcars/vulnerability-3
exploit

Sources

CVE List CVE-2026-36720
NVD CVE-2026-36720

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary