How severe is CVE-2023-5812?

CVE-2023-5812 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2023-5812 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-5812?

CVE-2023-5812 affects Flusity. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-5812?

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

When was CVE-2023-5812 published?

CVE-2023-5812 was published on 2023-10-27 and last updated on 2026-06-17.

CVE-2023-5812

CVE-2023-5812 is a medium-severity vulnerability in Flusity with a CVSS 3.x base score of 4.7. 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: Medium (CVSS 3.x base score 4.7)
CVSS v2: 5.8
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Flusity
Published: 2023-10-27
Last modified: 2026-06-17

Description

A vulnerability has been found in flusity CMS and classified as critical. Affected by this vulnerability is the function handleFileUpload of the file core/tools/upload.php. The manipulation of the argument uploaded_file leads to unrestricted upload. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. The associated identifier of this vulnerability is VDB-243643.

Frequently asked questions

What is CVE-2023-5812?: A vulnerability has been found in flusity CMS and classified as critical. Affected by this vulnerability is the function handleFileUpload of the file core/tools/upload.php. The manipulation of the argument uploaded_file leads to unrestricted upload. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. The associated identifier of this vulnerability is VDB-243643.
How severe is CVE-2023-5812?: CVE-2023-5812 has a CVSS 3.x base score of 4.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2023-5812 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-5812?: CVE-2023-5812 affects Flusity. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-5812?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-5812 published?: CVE-2023-5812 was published on 2023-10-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:flusity:flusity:*:*:*:*:*:*:*:*

More vulnerabilities in Flusity

CVE-2024-31666 — Critical (CVSS 9.8): An issue in flusity-CMS v.2.33 allows a remote attacker to execute arbitrary code via a crafted script to the…
CVE-2024-32418 — Critical (CVSS 9.8): An issue in flusity CMS v2.33 allows a remote attacker to execute arbitrary code via the add_addon.php component.
CVE-2024-25502 — Critical (CVSS 9.8): Directory Traversal vulnerability in flusity CMS v.2.4 allows a remote attacker to execute arbitrary code and obtain…
CVE-2024-26352 — High (CVSS 8.8): flusity-CMS v2.33 was discovered to contain a Cross-Site Request Forgery (CSRF) via the component…
CVE-2024-26350 — High (CVSS 8.8): flusity-CMS v2.33 was discovered to contain a Cross-Site Request Forgery (CSRF) via the component…
CVE-2024-23094 — High (CVSS 8.8): Flusity-CMS v2.33 was discovered to contain a Cross-Site Request Forgery (CSRF) via the component…

All CVEs affecting Flusity →

Other CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities

CVE-2026-48283 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2026-48276 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
CVE-2026-57700 — Critical (CVSS 10.0): Unrestricted Upload of File with Dangerous Type vulnerability in Daan.Dev OMGF Pro allows Using Malicious Files. This…
CVE-2025-69129 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in WordPress & WooCommerce Scraper Plugin, Import Data from Any Site <= 1.0.7…
CVE-2026-40772 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in GeekyBot <= 1.2.2 versions.
CVE-2026-40412 — Critical (CVSS 10.0): Unrestricted upload of file with dangerous type in Azure Orbital Spatio allows an unauthorized attacker to execute code…

Browse all CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities →