What is CVE-2023-39377?

CVE-2023-39377 is a high-severity vulnerability in Siberiancms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.2/10. Published 2023-09-27.

How severe is CVE-2023-39377?

High severity. CVSS v3 base score is 7.2 out of 10.

Arbitrary file upload in Siberiancms

CVE-2023-39377

SiberianCMS - CWE-434: Unrestricted Upload of File with Dangerous Type - A malicious user with administrative privileges may be able to upload a dangerous filetype via an unspecified method

Vulnerability class: Unrestricted File Upload

Published 2023-09-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (62.3th percentile), scored 2026-10-05.

Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 62.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.010 · change: +0.002

Affected products

Siberiancms — versions versions 4.*, 5.*

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

www.gov.il/en/Departments/faq/cve_advisories (Third Party Advisory)

Frequently asked questions

What is CVE-2023-39377?: CVE-2023-39377 is a high-severity vulnerability in Siberiancms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.2/10. Published 2023-09-27.
How severe is CVE-2023-39377?: High severity. CVSS v3 base score is 7.2 out of 10.