Svelte
by Sveltejs
Source repositories
CVEs (12)
| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2026-42567 | Hig | 0.42 | 7.5 | 0.00 | Jun 9, 2026 | Svelte is a performance oriented web framework. From version 5.51.5 to before version 5.55.7, an internal regex in the Svelte runtime can take exponential time to test in <svelte:element this={tag}></svelte:element>. This issue has been patched in version 5.55.7. | ||
| CVE-2026-42599 | Med | 0.33 | 6.1 | 0.00 | Jun 9, 2026 | 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… | ||
| CVE-2026-42573 | Med | 0.33 | 6.1 | 0.00 | Jun 9, 2026 | 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-2026-27902 | 0.00 | — | 0.00 | Feb 26, 2026 | Svelte performance oriented web framework. Prior to version 5.53.5, errors from `transformError` were not correctly escaped prior to being embedded in the HTML output, causing potential HTML injection and XSS if attacker-controlled content is returned from `transformError`.… | |||
| CVE-2026-27901 | 0.00 | — | 0.00 | Feb 26, 2026 | Svelte performance oriented web framework. Prior to version 5.53.5, the contents of `bind:innerText` and `bind:textContent` on `contenteditable` elements were not properly escaped. This could enable HTML injection and Cross-Site Scripting (XSS) if rendering untrusted data as the… | |||
| CVE-2026-27125 | 0.00 | — | 0.00 | Feb 20, 2026 | svelte performance oriented web framework. Prior to 5.51.5, in server-side rendering, attribute spreading on elements (e.g. ) enumerates inherited properties from the object's prototype chain rather than only own properties. In environments where Object.prototype… | |||
| CVE-2026-27122 | 0.00 | — | 0.00 | Feb 20, 2026 | svelte performance oriented web framework. Prior to 5.51.5, when using <svelte:element this={tag}> 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… | |||
| CVE-2026-27121 | 0.00 | — | 0.00 | Feb 20, 2026 | 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… | |||
| CVE-2026-27119 | 0.00 | — | 0.00 | Feb 20, 2026 | svelte performance oriented web framework. From 5.39.3, <=5.51.4, in certain circumstances, the server-side rendering output of an element does not properly escape its content, potentially allowing HTML injection in the SSR output. Client-side rendering is not affected.… | |||
| CVE-2025-15265 | 0.00 | — | 0.00 | Jan 15, 2026 | An SSR XSS exists in async hydration when attacker‑controlled keys are passed to hydratable. The key is embedded inside a to terminate the script and inject arbitrary JavaScript. This enables remote script… | |||
| CVE-2024-45047 | 0.00 | — | 0.00 | Aug 30, 2024 | 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… | |||
| CVE-2022-25875 | 0.00 | — | 0.01 | Jul 12, 2022 | The package svelte before 3.49.0 are vulnerable to Cross-site Scripting (XSS) due to improper input sanitization and to improper escape of attributes when using objects during SSR (Server-Side Rendering). Exploiting this vulnerability is possible via objects with a custom… |
- risk 0.42cvss 7.5epss 0.00
Svelte is a performance oriented web framework. From version 5.51.5 to before version 5.55.7, an internal regex in the Svelte runtime can take exponential time to test in <svelte:element this={tag}></svelte:element>. This issue has been patched in version 5.55.7.
- risk 0.33cvss 6.1epss 0.00
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…
- risk 0.33cvss 6.1epss 0.00
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-2026-27902Feb 26, 2026risk 0.00cvss —epss 0.00
Svelte performance oriented web framework. Prior to version 5.53.5, errors from `transformError` were not correctly escaped prior to being embedded in the HTML output, causing potential HTML injection and XSS if attacker-controlled content is returned from `transformError`.…
- CVE-2026-27901Feb 26, 2026risk 0.00cvss —epss 0.00
Svelte performance oriented web framework. Prior to version 5.53.5, the contents of `bind:innerText` and `bind:textContent` on `contenteditable` elements were not properly escaped. This could enable HTML injection and Cross-Site Scripting (XSS) if rendering untrusted data as the…
- CVE-2026-27125Feb 20, 2026risk 0.00cvss —epss 0.00
svelte performance oriented web framework. Prior to 5.51.5, in server-side rendering, attribute spreading on elements (e.g. ) enumerates inherited properties from the object's prototype chain rather than only own properties. In environments where Object.prototype…
- CVE-2026-27122Feb 20, 2026risk 0.00cvss —epss 0.00
svelte performance oriented web framework. Prior to 5.51.5, when using <svelte:element this={tag}> 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…
- CVE-2026-27121Feb 20, 2026risk 0.00cvss —epss 0.00
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…
- CVE-2026-27119Feb 20, 2026risk 0.00cvss —epss 0.00
svelte performance oriented web framework. From 5.39.3, <=5.51.4, in certain circumstances, the server-side rendering output of an element does not properly escape its content, potentially allowing HTML injection in the SSR output. Client-side rendering is not affected.…
- CVE-2025-15265Jan 15, 2026risk 0.00cvss —epss 0.00
An SSR XSS exists in async hydration when attacker‑controlled keys are passed to hydratable. The key is embedded inside a to terminate the script and inject arbitrary JavaScript. This enables remote script…
- CVE-2024-45047Aug 30, 2024risk 0.00cvss —epss 0.00
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…
- CVE-2022-25875Jul 12, 2022risk 0.00cvss —epss 0.01
The package svelte before 3.49.0 are vulnerable to Cross-site Scripting (XSS) due to improper input sanitization and to improper escape of attributes when using objects during SSR (Server-Side Rendering). Exploiting this vulnerability is possible via objects with a custom…