5.4
Medium
CVE-2026-112951 ApostropheCMS is an open-source Node.js content management system
Description
ApostropheCMS is an open-source Node.js content management system. Prior to 4.34.0, the color field accepts trailing content after a valid rgb() or hsl() prefix because its TinyColor validation does not require the entire value to match a color. An authenticated user with edit rights can store arbitrary HTML after a valid color prefix. When the stored value is rendered, the payload executes, resulting in stored XSS. This issue is fixed in version 4.34.0.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| apostrophe 4.34 | earliest → < 4.34.0 | 4.34.0 |
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