How severe is CVE-2023-42334?

CVE-2023-42334 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-42334 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-42334?

CVE-2023-42334 primarily affects Fl3xx Crew. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-42334?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-42334 published?

CVE-2023-42334 was published on 2023-09-20 and last updated on 2026-06-17.

CVE-2023-42334

CVE-2023-42334 is a medium-severity vulnerability in Fl3xx Crew with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-639.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-639
Affected product: Fl3xx Crew
Published: 2023-09-20
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2023-42334?: CVE-2023-42334 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2023-42334 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-42334?: CVE-2023-42334 primarily affects Fl3xx Crew. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-42334?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-42334 published?: CVE-2023-42334 was published on 2023-09-20 and last updated on 2026-06-17.

References

https://0xhunter20.medium.com/an-idor-lead-to-viewing-other-users-files-cve-2023-42334-702de328c453

Affected products (2)

cpe:2.3:a:fl3xx:crew:2.10.37:*:*:*:*:*:*:*
cpe:2.3:a:fl3xx:dispatch:2.10.37:*:*:*:*:*:*:*

More vulnerabilities in Fl3xx Crew

CVE-2023-42335 — High (CVSS 8.8): Unrestricted File Upload vulnerability in Fl3xx Dispatch 2.10.37 and fl3xx Crew 2.10.37 allows a remote attacker to…

All CVEs affecting Fl3xx Crew →

Other CWE-639 (Authorization Bypass Through User-Controlled Key (IDOR)) vulnerabilities

CVE-2025-40805 — Critical (CVSS 10.0): Affected devices do not properly enforce user authentication on specific API endpoints. This could facilitate an…
CVE-2024-45032 — Critical (CVSS 10.0): A vulnerability has been identified in Industrial Edge Management Pro (All versions < V1.9.5), Industrial Edge…
CVE-2026-34037 — Critical (CVSS 9.9): Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to…
CVE-2026-52782 — Critical (CVSS 9.9): OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, there is an IDOR through…
CVE-2026-45552 — Critical (CVSS 9.9): Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. In versions 8.2.6.4 and prior,…
CVE-2026-29200 — Critical (CVSS 9.9): A critical IDOR vulnerability has been discovered in Comet Backup affecting all versions from 20.11.0 to 26.1.1 and…

Browse all CWE-639 (Authorization Bypass Through User-Controlled Key (IDOR)) vulnerabilities →