How severe is CVE-2023-6551?

CVE-2023-6551 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-6551 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-6551?

CVE-2023-6551 affects Verot Class.upload.php. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-6551?

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

Does CVE-2023-6551 have an EU (EUVD) identifier?

Yes. CVE-2023-6551 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0433.

When was CVE-2023-6551 published?

CVE-2023-6551 was published on 2024-01-04 and last updated on 2026-06-17.

CVE-2023-6551

CVE-2023-6551 is a medium-severity vulnerability in Verot Class.upload.php with a CVSS 3.x base score of 5.4. 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 5.4)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-0433
Weakness: CWE-434
Affected product: Verot Class.upload.php
Published: 2024-01-04
Last modified: 2026-06-17

Description

As a simple library, class.upload.php does not perform an in-depth check on uploaded files, allowing a stored XSS vulnerability when the default configuration is used. Developers must be aware of that fact and use extension whitelisting accompanied by forcing the server to always provide content-type based on the file extension. The README has been updated to include these guidelines.

Frequently asked questions

What is CVE-2023-6551?: As a simple library, class.upload.php does not perform an in-depth check on uploaded files, allowing a stored XSS vulnerability when the default configuration is used. Developers must be aware of that fact and use extension whitelisting accompanied by forcing the server to always provide content-type based on the file extension. The README has been updated to include these guidelines.
How severe is CVE-2023-6551?: CVE-2023-6551 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-6551 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-6551?: CVE-2023-6551 affects Verot Class.upload.php. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-6551?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-6551 have an EU (EUVD) identifier?: Yes. CVE-2023-6551 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0433.
When was CVE-2023-6551 published?: CVE-2023-6551 was published on 2024-01-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:verot:class.upload.php:-:*:*:*:*:*:*:*

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