What is CVE-2023-42335?

CVE-2023-42335 is a high-severity vulnerability in Fl3xx Crew, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2023-09-20.

How severe is CVE-2023-42335?

High severity. CVSS v3 base score is 8.8 out of 10.

Arbitrary file upload in Fl3xx Crew

CVE-2023-42335

Unrestricted File Upload vulnerability in Fl3xx Dispatch 2.10.37 and fl3xx Crew 2.10.37 allows a remote attacker to execute arbitrary code via the add attachment function in the New Expense component.

Vulnerability class: Unrestricted File Upload

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

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (70.0th percentile), scored 2026-10-04.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.013 · change: +0.002

Affected products

Fl3xx Crew — versions 2.10.37
Fl3xx Dispatch — versions 2.10.37

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

0xhunter20.medium.com/how-i-found-unrestricted-file-upload-in-fl3xx-ios-app-cve… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-42335?: CVE-2023-42335 is a high-severity vulnerability in Fl3xx Crew, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2023-09-20.
How severe is CVE-2023-42335?: High severity. CVSS v3 base score is 8.8 out of 10.