Technical impact
The vulnerability allows a cross‑site scripting flaw by assigning user‑supplied source view content to a component’s innerHTML without using DomSanitizer. Attackers can craft HTML that includes event attributes such as img onerror, which triggers JavaScript execution in the context of the application when the editor view is toggled.
Affected Systems
Products affected are kolkov:angular-editor prior to version 3.0.4. Any deployment of the Angular Editor library before that release is vulnerable; no additional vendor or product names are listed.
Risk and Exploitability
The CVSS score of 5.3 indicates moderate severity. Exploitation requires a user to paste malicious HTML into the editor’s source view and then trigger a view toggle. The EPSS score is not available, and the issue is not listed in CISA’s KEV catalog, suggesting low to moderate likelihood of widespread exploitation but still requires attention, especially in applications exposed to untrusted input.