# Svelte Kit vulnerabilities

Source: https://junglewise.ai/threats/technologies/kit  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/kit.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 5 vulnerabilities in Svelte Kit: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-82258, was published on 28 August 2026. Nothing was published in the last eight weeks.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 1
- All time: 5 (0 critical, 0 exploited in the wild)

## About Svelte Kit

A framework for building web applications using Svelte that provides routing, server-side rendering, and data fetching.

## Latest Svelte Kit vulnerabilities

- [CVE-2026-82258: SvelteJS Kit query.batch cross-talk vulnerability](https://junglewise.ai/threats/cve-2026-82258-sveltejs-kit-query-batch-cross-talk-vulnerability) (medium, CVSS 4.8, published 28 Aug 2026)
- [CVE-2026-66062: Svelte SvelteKit ReDoS in Accept header content negotiation](https://junglewise.ai/threats/cve-2026-66062-svelte-sveltekit-redos-in-accept-header-content-negotiation) (medium, CVSS 5.3, published 7 Aug 2026)
- [CVE-2026-40074: Svelte SvelteKit denial of service in redirect function](https://junglewise.ai/threats/cve-2026-40074-svelte-sveltekit-denial-of-service-in-redirect-function) (high, CVSS 7.5, published 10 Apr 2026)
- [CVE-2026-40073: Svelte SvelteKit body size limit bypass in adapter-node](https://junglewise.ai/threats/cve-2026-40073-svelte-sveltekit-body-size-limit-bypass-in-adapter-node) (high, CVSS 7.5, published 10 Apr 2026)
- [CVE-2024-53261: SvelteJS Kit cross-site scripting in dev mode 404 page](https://junglewise.ai/threats/cve-2024-53261-sveltejs-kit-cross-site-scripting-in-dev-mode-404-page) (low, CVSS 3.1, published 25 Nov 2024)

## Most severe Svelte Kit vulnerabilities

- [CVE-2026-40073: Svelte SvelteKit body size limit bypass in adapter-node](https://junglewise.ai/threats/cve-2026-40073-svelte-sveltekit-body-size-limit-bypass-in-adapter-node) (high, CVSS 7.5, published 10 Apr 2026)
- [CVE-2026-40074: Svelte SvelteKit denial of service in redirect function](https://junglewise.ai/threats/cve-2026-40074-svelte-sveltekit-denial-of-service-in-redirect-function) (high, CVSS 7.5, published 10 Apr 2026)
- [CVE-2026-66062: Svelte SvelteKit ReDoS in Accept header content negotiation](https://junglewise.ai/threats/cve-2026-66062-svelte-sveltekit-redos-in-accept-header-content-negotiation) (medium, CVSS 5.3, published 7 Aug 2026)
- [CVE-2026-82258: SvelteJS Kit query.batch cross-talk vulnerability](https://junglewise.ai/threats/cve-2026-82258-sveltejs-kit-query-batch-cross-talk-vulnerability) (medium, CVSS 4.8, published 28 Aug 2026)
- [CVE-2024-53261: SvelteJS Kit cross-site scripting in dev mode 404 page](https://junglewise.ai/threats/cve-2024-53261-sveltejs-kit-cross-site-scripting-in-dev-mode-404-page) (low, CVSS 3.1, published 25 Nov 2024)

## 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 | 1 | 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 Svelte technologies

- [SvelteKit](https://junglewise.ai/threats/technologies/sveltekit): 20 vulnerabilities
- [Svelte Devalue](https://junglewise.ai/threats/technologies/svelte-devalue): 8 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 Kit vulnerabilities", https://junglewise.ai/threats/technologies/kit, 9 November 2026.