What is CVE-2024-1659?

CVE-2024-1659 is a critical-severity vulnerability in Jan Syski Megabip, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2024-06-12.

How severe is CVE-2024-1659?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Arbitrary file upload in Jan Syski Megabip

CVE-2024-1659

Arbitrary File Upload vulnerability in MegaBIP software allows attacker to upload any file to the server (including a PHP code file) without an authentication. This issue affects MegaBIP software versions through 5.10.

Vulnerability class: Unrestricted File Upload

Published 2024-06-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (50.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Jan Syski Megabip — versions 0
Megabip

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

cert.pl/en/posts/2024/06/CVE-2024-1576/ (Third Party Advisory, third-party-advisory)
cert.pl/posts/2024/06/CVE-2024-1576/ (Third Party Advisory, third-party-advisory)
megabip.pl/ (Product, product)
www.gov.pl/web/cyfryzacja/rekomendacja-pelnomocnika-rzadu-ds-cyberbezpieczenstw… (government-resource, Press/Media Coverage)

Frequently asked questions

What is CVE-2024-1659?: CVE-2024-1659 is a critical-severity vulnerability in Jan Syski Megabip, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2024-06-12.
How severe is CVE-2024-1659?: Critical severity. CVSS v3 base score is 9.8 out of 10.