svelte performance oriented web framework.

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. Feb 20, 2026 · NIST NVD

   Detected

   svelte performance oriented web framework. Versions of svelte prior to 5.51.5 are vulnerable to cross-site scripting (XSS) during server-side rendering. When using spread syntax to render attributes from untrusted data, event handler properties are included in the rendered HTML output. If an application spreads user-controlled or external data as element attributes, an attacker can inject maliciou

2. Jun 17, 2026 · NIST NVD

   Updated

   svelte performance oriented web framework. Versions of svelte prior to 5.51.5 are vulnerable to cross-site scripting (XSS) during server-side rendering. When using spread syntax to render attributes from untrusted data, event handler properties are included in the rendered HTML output. If an application spreads user-controlled or external data as element attributes, an attacker can inject maliciou

Affected

• cpe svelte/svelteversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-27121

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-27121

  svelte performance oriented web framework. Versions of svelte prior to 5.51.5 are vulnerable to cross-site scripting (XSS) during server-side rendering. When using spread syntax to render attributes from untrusted data, event handler properties are included in the rendered HTML o

  nvd.nist.gov

References

• Vendor Advisory · github.com