How severe is CVE-2023-39377?

CVE-2023-39377 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-39377 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-39377?

CVE-2023-39377 affects Siberiancms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-39377?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-39377 published?

CVE-2023-39377 was published on 2023-09-27 and last updated on 2026-06-17.

CVE-2023-39377

CVE-2023-39377 is a high-severity vulnerability in Siberiancms with a CVSS 3.x base score of 7.2. 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-434.

Key facts

Severity: High (CVSS 3.x base score 7.2)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Siberiancms
Published: 2023-09-27
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is 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
How severe is CVE-2023-39377?: CVE-2023-39377 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-39377 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-39377?: CVE-2023-39377 affects Siberiancms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-39377?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-39377 published?: CVE-2023-39377 was published on 2023-09-27 and last updated on 2026-06-17.

References

https://www.gov.il/en/Departments/faq/cve_advisories

Affected products (1)

cpe:2.3:a:siberiancms:siberiancms:*:*:*:*:*:*:*:*

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