CVE-2023-6551

low-risk

Published 2024-01-04

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.

Do I need to act?

0.10% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.4/10 Medium

NETWORK / LOW complexity

Affected Products (1)

Class.Upload.Php

Affected Vendors

Verot

References (4)

Third Party Advisory https://cert.pl/en/posts/2024/01/CVE-2023-6551

Third Party Advisory https://cert.pl/posts/2024/01/CVE-2023-6551

Third Party Advisory https://cert.pl/en/posts/2024/01/CVE-2023-6551

Third Party Advisory https://cert.pl/posts/2024/01/CVE-2023-6551

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low-risk

Severity 21/34 · High

Exploitability 0/34 · Minimal

Exposure 5/34 · Minimal