CVE-2026-112958 — ApostropheCMS: Stored XSS via Unescaped Widget Style Attribute Serialization
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 i…
Published: 2026-10-20 · CVSS: 5.4 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7