# svelte (npm) vulnerabilities

Source: https://junglewise.ai/threats/technologies/svelte  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/svelte.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 14 vulnerabilities in svelte (npm): 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-42599, was published on 9 June 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 14 (0 critical, 0 exploited in the wild)

## About svelte (npm)

JavaScript framework for building user interfaces with reactive components and minimal overhead.

## Latest svelte (npm) vulnerabilities

- [CVE-2026-42599: Svelte XSS via spread attributes in SSR](https://junglewise.ai/threats/cve-2026-42599-svelte-xss-via-spread-attributes-in-ssr) (medium, CVSS 4, published 9 Jun 2026)
- [CVE-2026-42573: Svelte DOM clobbering leading to XSS in internal framework state](https://junglewise.ai/threats/cve-2026-42573-svelte-dom-clobbering-leading-to-xss-in-internal-framework-state) (medium, CVSS 4, published 9 Jun 2026)
- [CVE-2026-42567: Svelte ReDoS in svelte:element tag validation](https://junglewise.ai/threats/cve-2026-42567-svelte-redos-in-svelte-element-tag-validation) (medium, CVSS 4, published 9 Jun 2026)
- [Svelte XSS via insecure promise serialization in hydratable](https://junglewise.ai/threats/svelte-xss-via-insecure-promise-serialization-in-hydratable-3f504409) (medium, CVSS 4, published 14 May 2026)
- [CVE-2026-27902: Svelte XSS via HTML comment injection in SSR error boundary](https://junglewise.ai/threats/cve-2026-27902-svelte-xss-via-html-comment-injection-in-ssr-error-boundary) (medium, CVSS 4, published 26 Feb 2026)
- [CVE-2026-27901: Svelte XSS in SSR with contenteditable bind:innerText and bind:textContent](https://junglewise.ai/threats/cve-2026-27901-svelte-xss-in-ssr-with-contenteditable-bind-innertext-and-bind) (medium, CVSS 4, published 26 Feb 2026)
- [CVE-2026-27125: Svelte SSR attribute spreading prototype chain pollution](https://junglewise.ai/threats/cve-2026-27125-svelte-ssr-attribute-spreading-prototype-chain-pollution) (medium, CVSS 4, published 19 Feb 2026)
- [CVE-2026-27122: Svelte SSR HTML injection in svelte:element tag validation](https://junglewise.ai/threats/cve-2026-27122-svelte-ssr-html-injection-in-svelte-element-tag-validation) (medium, CVSS 4, published 19 Feb 2026)
- [CVE-2026-27121: Svelte cross-site scripting in server-side rendering via spread attributes](https://junglewise.ai/threats/cve-2026-27121-svelte-cross-site-scripting-in-server-side-rendering-via-spread) (medium, CVSS 4, published 19 Feb 2026)
- [CVE-2026-27119: Svelte XSS in SSR option element](https://junglewise.ai/threats/cve-2026-27119-svelte-xss-in-ssr-option-element) (medium, CVSS 4, published 19 Feb 2026)
- [Svelte XSS in textarea bind:value during server-side rendering](https://junglewise.ai/threats/svelte-xss-in-textarea-bind-value-during-server-side-rendering-8c8d8142) (medium, CVSS 4, published 16 Jan 2026)
- [CVE-2025-15265: Svelte cross-site scripting in hydratable keys](https://junglewise.ai/threats/cve-2025-15265-svelte-cross-site-scripting-in-hydratable-keys) (medium, CVSS 4, published 15 Jan 2026)
- [CVE-2024-45047: Svelte improper HTML escaping in server-side rendering](https://junglewise.ai/threats/cve-2024-45047-svelte-improper-html-escaping-in-server-side-rendering) (low, CVSS 3.1, published 30 Aug 2024)
- [CVE-2022-25875: Svelte XSS in server-side rendering via object toString](https://junglewise.ai/threats/cve-2022-25875-svelte-xss-in-server-side-rendering-via-object-tostring) (low, CVSS 3.1, published 13 Jul 2022)

## Most severe svelte (npm) vulnerabilities

- [CVE-2026-27125: Svelte SSR attribute spreading prototype chain pollution](https://junglewise.ai/threats/cve-2026-27125-svelte-ssr-attribute-spreading-prototype-chain-pollution) (medium, CVSS 4, published 19 Feb 2026)
- [CVE-2026-42567: Svelte ReDoS in svelte:element tag validation](https://junglewise.ai/threats/cve-2026-42567-svelte-redos-in-svelte-element-tag-validation) (medium, CVSS 4, published 9 Jun 2026)
- [CVE-2026-27902: Svelte XSS via HTML comment injection in SSR error boundary](https://junglewise.ai/threats/cve-2026-27902-svelte-xss-via-html-comment-injection-in-ssr-error-boundary) (medium, CVSS 4, published 26 Feb 2026)
- [CVE-2026-27901: Svelte XSS in SSR with contenteditable bind:innerText and bind:textContent](https://junglewise.ai/threats/cve-2026-27901-svelte-xss-in-ssr-with-contenteditable-bind-innertext-and-bind) (medium, CVSS 4, published 26 Feb 2026)
- [CVE-2026-42573: Svelte DOM clobbering leading to XSS in internal framework state](https://junglewise.ai/threats/cve-2026-42573-svelte-dom-clobbering-leading-to-xss-in-internal-framework-state) (medium, CVSS 4, published 9 Jun 2026)
- [CVE-2025-15265: Svelte cross-site scripting in hydratable keys](https://junglewise.ai/threats/cve-2025-15265-svelte-cross-site-scripting-in-hydratable-keys) (medium, CVSS 4, published 15 Jan 2026)
- [CVE-2026-42599: Svelte XSS via spread attributes in SSR](https://junglewise.ai/threats/cve-2026-42599-svelte-xss-via-spread-attributes-in-ssr) (medium, CVSS 4, published 9 Jun 2026)
- [CVE-2026-27122: Svelte SSR HTML injection in svelte:element tag validation](https://junglewise.ai/threats/cve-2026-27122-svelte-ssr-html-injection-in-svelte-element-tag-validation) (medium, CVSS 4, published 19 Feb 2026)
- [CVE-2026-27121: Svelte cross-site scripting in server-side rendering via spread attributes](https://junglewise.ai/threats/cve-2026-27121-svelte-cross-site-scripting-in-server-side-rendering-via-spread) (medium, CVSS 4, published 19 Feb 2026)
- [CVE-2026-27119: Svelte XSS in SSR option element](https://junglewise.ai/threats/cve-2026-27119-svelte-xss-in-ssr-option-element) (medium, CVSS 4, published 19 Feb 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other npm technologies

- [openclaw (npm)](https://junglewise.ai/threats/technologies/npm-openclaw): 214 vulnerabilities
- [flowise (npm)](https://junglewise.ai/threats/technologies/flowise): 133 vulnerabilities
- [parse-server (npm)](https://junglewise.ai/threats/technologies/parse-server): 117 vulnerabilities
- [vm2 (npm)](https://junglewise.ai/threats/technologies/vm2): 111 vulnerabilities
- [electron (npm)](https://junglewise.ai/threats/technologies/electron): 77 vulnerabilities
- [ghost (npm)](https://junglewise.ai/threats/technologies/ghost): 74 vulnerabilities
- [n8n (npm)](https://junglewise.ai/threats/technologies/npm-n8n): 64 vulnerabilities
- [hono (npm)](https://junglewise.ai/threats/technologies/hono): 62 vulnerabilities
- [directus (npm)](https://junglewise.ai/threats/technologies/directus): 61 vulnerabilities
- [nocodb (npm)](https://junglewise.ai/threats/technologies/nocodb): 54 vulnerabilities
- [undici (npm)](https://junglewise.ai/threats/technologies/undici): 53 vulnerabilities
- [@budibase/server (npm)](https://junglewise.ai/threats/technologies/budibase-server): 42 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "svelte (npm) vulnerabilities", https://junglewise.ai/threats/technologies/svelte, 13 November 2026.