EUVD-2026-35701

Svelte is a performance oriented web framework. Prior to version 5.55.7, Svelte was vulnerable to DOM clobbering of its internal framework state on elements, potentially leading to XSS attacks. This issue has been patched in version 5.55.7...

CVE-2026-42573 Svelte: XSS via DOM Clobbering of Internal Framework State

Svelte is a performance oriented web framework. Prior to version 5.55.7, Svelte was vulnerable to DOM clobbering of its internal framework state on elements, potentially leading to XSS attacks. This issue has been patched in version 5.55.7...

CVE-2026-42573 Svelte: XSS via DOM Clobbering of Internal Framework State

Svelte is a performance oriented web framework. Prior to version 5.55.7, Svelte was vulnerable to DOM clobbering of its internal framework state on elements, potentially leading to XSS attacks. This issue has been patched in version 5.55.7...

CVE-2026-42573 Svelte: XSS via DOM Clobbering of Internal Framework State

Svelte is a performance oriented web framework. Prior to version 5.55.7, Svelte was vulnerable to DOM clobbering of its internal framework state on elements, potentially leading to XSS attacks. This issue has been patched in version 5.55.7...

CVE-2026-42573

CVE-2026-42573 (Svelte) describes a DOM clobbering vulnerability in Svelte prior to version 5.55.7, where internal framework state can be overwritten on elements, potentially enabling Cross-Site Scripting (XSS). The issue has been fixed in 5.55.7. Affected scope : Svelte versions before 5.55.7 (a...

CVE-2026-42570 Svelte devalue: DoS via sparse array deserialization

Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. From version 5.6.3 to before version 5.8.1, devalue.parse could, due to quirks in some JavaScript engines, be convinced to allocate much more memory than was needed when...

CVE-2026-42570

CVE-2026-42570 affects the Svelte devalue library. devalue.parse could allocate excessive memory when deserializing sparse arrays in versions 5.6.3 through 5.8.0, due to engine quirks. The issue is fixed in version 5.8.1. Affected references include GitHub advisories GHSA-77vg-94rm-hx3p and OSV e...

CVE-2026-42570 Svelte devalue: DoS via sparse array deserialization

Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. From version 5.6.3 to before version 5.8.1, devalue.parse could, due to quirks in some JavaScript engines, be convinced to allocate much more memory than was needed when...

CVE-2026-42570 Svelte devalue: DoS via sparse array deserialization

Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. From version 5.6.3 to before version 5.8.1, devalue.parse could, due to quirks in some JavaScript engines, be convinced to allocate much more memory than was needed when...

PT-2026-47875

Svelte is a performance oriented web framework. Prior to version 5.55.7, 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...

Svelte 跨站脚本漏洞

Svelte is an open-source approach to building web applications. Versions of Svelte prior to 5.55.7 contained a cross-site scripting vulnerability. This vulnerability stemmed from DOM pollution of internal framework states, which could lead to cross-site scripting attacks...

devalue 安全漏洞

devalue is an enhanced JavaScript object serialization library developed by Svelte. Versions of devalue from 5.6.3 to 5.8.1 contained a security vulnerability. This vulnerability stemmed from excessive memory allocation during the deserialization of sparse arrays, which could lead to excessive...

Svelte 安全漏洞

Svelte is an open-source approach to building web applications. Versions of Svelte from 5.51.5 to 5.55.7 contained a security vulnerability. This vulnerability stemmed from the exponential increase in time taken for internal regular expression tests, which could lead to denial-of-service attacks...

Svelte 跨站脚本漏洞

Svelte is an open-source approach to building web applications. Versions of Svelte prior to 5.55.7 contained a cross-site scripting vulnerability. This vulnerability stemmed from the use of extended syntax for rendering untrusted data, causing event handling properties to be included in the HTML...

@sveltejs/kit: `query.batch` cross-talk

query.batch could, under very rare and specific timings, cause concurrent requests from different users to merge and resolve under single request context, enabling cross-user data disclosure...

Incorrect Synchronization

Overview @sveltejs/kit is a SvelteKit framework and CLI Affected versions of this package are vulnerable to Incorrect Synchronization via the query.batch function. An attacker can access data belonging to other users by exploiting a race condition that causes concurrent requests from different...

NPM: Svelte: SSR XSS via Insecure Promise Serialization in hydratable

NPM: Svelte: SSR XSS via Insecure Promise Serialization in hydratable vulnerability discovered by ? in WordPress Npm svelte versions = 5.46.0, = 5.55.6...

GHSA-F3CJ-J4F6-WQ85 Svelte: SSR XSS via Insecure Promise Serialization in hydratable

Contents of hydratable promises were not properly stringified, potentially leading to an XSS exploit. You are vulnerable if all of the following is true: - you are using hydratable an experimental feature at the time of this report - you are passing attacker-controlled input such that a synchrono...

Svelte: SSR XSS via Insecure Promise Serialization in hydratable

Contents of hydratable promises were not properly stringified, potentially leading to an XSS exploit. You are vulnerable if all of the following is true: - you are using hydratable an experimental feature at the time of this report - you are passing attacker-controlled input such that a synchrono...

Cross-site Scripting (XSS)

Overview svelte is a package for building web applications. Affected versions of this package are vulnerable to Cross-site Scripting XSS via improper serialization of hydratable promises. An attacker can execute arbitrary scripts in the context of the affected application by supplying specially...