Description
A stored cross-site scripting (XSS) vulnerability affected entry summary rendering in Sveltia CMS.
Entry summaries that allowed limited Markdown were parsed, sanitized, and then HTML entities were decoded.
Recommendation
Update the @sveltia/cms package to the latest compatible version. Followings are version details:
- Affected version(s): < 0.160.0
- Patched version(s): 0.160.1
References
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- Stored XSS via <iframe> in HAX CMS allows access to sensitive client-side data and account takeover - CVE-2026-46396
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See something that needs correcting? Let us knowUpdated May 18, 2026