Security context

What an agent needs to avoid regressing past fixes and find the next vuln in this repo.

jupyter-widgets/ipywidgets
main @ 6d1293c
4
Fixes
0
CVEs
HIGH
Peak severity
25.0%
Coverage
Highlights
Auth Bypass: 1 prior fix. Scrutinize any change in this area.
ipywidgets/widgets/widget_description.py: most-fixed (1 issue). Treat as high-risk during review.
1 high-severity fix in this history; regressions here are high-impact.
Recurring patterns

The bug types that recur here, drawn from past fixes, not open vulnerabilities.

DOM-based XSS: Inadequate or broken HTML sanitization configurations (such as bypassed DOMPurify configurations) can allow arbitrary script execution in the context of the notebook or dashboard host when rendering widget states.
Stored XSS: Defaulting to HTML rendering for widget descriptions without sanitization or output encoding allows attackers to persist payloads in notebook files that execute upon rendering.
Auth Bypass: Allowing arbitrary frontend write-back on privileged state attributes (such as uploaded file metadata or file contents) permits untrusted clients to bypass intended security limits or inject malicious states.