Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/apostrophecms/apostrophe/commit/06e4b377f3c360f9e89c32dccd7e5
- https://github.com/apostrophecms/apostrophe/commit/40b989b1a9dd23d30029b8ce76686
- https://github.com/apostrophecms/apostrophe/releases/tag/[email protected]
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-7jg5-frgc-c
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-7jg5-frgc-c
FAQ
What is CVE-2026-112958?
CVE-2026-112958 is a vulnerability with a CVSS score of 5.4 (MEDIUM). 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 b...
How severe is CVE-2026-112958?
CVE-2026-112958 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-112958?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.