What is CVE-2023-42334?

CVE-2023-42334 is a medium-severity vulnerability in Fl3xx Crew, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2023-09-20.

How severe is CVE-2023-42334?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Fl3xx Crew

CVE-2023-42334

An Indirect Object Reference (IDOR) in Fl3xx Dispatch 2.10.37 and fl3xx Crew 2.10.37 allows a remote attacker to escalate privileges via the user parameter.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2023-09-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.008 (54.4th percentile), scored 2026-10-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 54.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.008 · change: +0.002

Affected products

Fl3xx Crew — versions 2.10.37
Fl3xx Dispatch — versions 2.10.37

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

0xhunter20.medium.com/an-idor-lead-to-viewing-other-users-files-cve-2023-42334-… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-42334?: CVE-2023-42334 is a medium-severity vulnerability in Fl3xx Crew, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.5/10. Published 2023-09-20.
How severe is CVE-2023-42334?: Medium severity. CVSS v3 base score is 6.5 out of 10.