CVE-2025-15265

MEDIUM

6.1

Description

An SSR XSS exists in async hydration when attacker‑controlled keys are passed to hydratable. The key is embedded inside a <script> block without HTML‑safe escaping, allowing </script> to terminate the script and inject arbitrary JavaScript. This enables remote script execution in users' browsers, with potential for session theft and account compromise. This issue affects Svelte: from 5.46.0 before 5.46.3.

Details CVE

Score CVSS v3.16.1

SeveriteMEDIUM

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurREQUIRED

Publie1/15/2026

Derniere modification1/23/2026

Sourcenvd

Observations honeypot0

Produits affectes

svelte:svelte

Faiblesses (CWE)

CWE-79

References

https://fluidattacks.com/advisories/lydian(help@fluidattacks.com)

https://github.com/sveltejs/svelte/security/advisories/GHSA-6738-r8g5-qwp3(help@fluidattacks.com)

Correlations IOC

Aucune correlation enregistree

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