CVE-2026-55090
CVE-2026-55090 · Etherpad: Stored XSS in HTML export via unescaped attribute-pool values
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
Etherpad is a real-time collaborative editor. Prior to 3.3.0, getHTMLFromAtext in src/node/utils/ExportHtml.ts interpolates values from the exportHtmlAdditionalTagsWithData plugin hook into span data attributes without HTML attribute escaping. A pad editor can place an attacker-controlled value into the attribute pool through moveOpsToNewPool and AttributePool.putAttrib. When a bundled plugin such as ep_font_color or ep_font_size registers the hook, opening the resulting HTML export causes the value to execute as stored cross-site scripting in the Etherpad origin. This issue is fixed in version 3.3.0.
CVSS 5.3 · Media · EPSS 0,5% · Corrección disponible
- Publicación
- Actualización
Pila tecnológica: node
Productos y versiones afectados
etherpad
- Versiones
- < 3.3.0: Afectada
Sin corrección publicada
ep_etherpad-lite npm
- Intervalos de versiones afectados
- SEMVER: < 3.3.0
Actualiza a 3.3.0