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CVE-2026-112958

ApostropheCMS: Stored XSS via Unescaped Widget Style Attribute Serialization PUBLISHED

Description (CNA)

ApostropheCMS is an open-source Node.js content management system. Prior to 4.34.0, a project-defined free-form widget style field can carry an editor-controlled quote into an inline style attribute because the wrapper serializer does not apply HTML-attribute encoding. The quote can terminate the style attribute and inject executable attributes when published content, or an affected draft viewed by a higher-privileged user, is rendered. This issue is fixed in version 4.34.0.

Affected (CNA)

Vendor / productVersions
apostrophecms / apostropheaffected < 4.34.0

CWE

CWE-79

References

ADP enrichment

CISA-ADP

No English description supplied.