CVE-2026-27122

svelte performance oriented web framework. Prior to 5.51.5, when using in server-side rendering, the provided tag name is not validated or sanitized before being emitted into the HTML output. If the tag string contains unexpected characters, it can result in HTML injection in the SSR output...

CVE-2026-27121

Technical details for CVE-2026-27121 are not publicly available in the provided documents. Monitor for updates.

PT-2026-21306

Name of the Vulnerable Software and Affected Versions Svelte versions prior to 5.51.5 Description Svelte is susceptible to cross-site scripting XSS during server-side rendering. Utilizing spread syntax with untrusted data can lead to the inclusion of event handler properties in the generated HTML...

CVE-2024-45047

svelte performance oriented web framework. A potential mXSS vulnerability exists in Svelte for versions up to but not including 4.2.19. Svelte improperly escapes HTML on server-side rendering. The assumption is that attributes will always stay as such, but in some situation the final DOM tree...