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A GitHub-reviewed security advisory, not necessarily under active exploitation the way our CISA KEV advisories are, but a real, disclosed vulnerability in an open-source dependency.
Affected packages
Vulnerable: < 9.22.5
Patched in 9.22.5
Details
The vulnerability allows an attacker to bypass the HTML sanitizer by using the data-html-content attribute in the content of a SharpEditorFormField.
The field must now explicitly configure SharpFormEditorField::RAW_HTML in the toolbar to keep this behavior. When using the RAW_HTML button, the application using code16/sharp must sanitize manually the content coming from the field.
Vulnerability has been patched in version 9.22.5.
Sanitize every contents of editors manually (e.g. using Symfony/HtmlSanitizer)
EPSS, exploit probability
Low0.23%
estimated chance of real-world exploitation in the next 30 days, higher than 14.1% of every CVE FIRST.org scores
Refreshed 11/9/2026, via FIRST.org's EPSS model, not CVSS, this measures likelihood of exploitation, not how severe it would be.
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A secure code review or supply chain review finds this before an advisory does.