Technology · npm
svelte (npm) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 15 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.
- Last 7 days
- 0
- Last 90 days
- 0
- Critical, all time
- 0
- Exploited in the wild
- 0
About svelte (npm)
Svelte is a JavaScript framework that compiles components into highly efficient code that surgically updates the DOM.
Latest svelte (npm) vulnerabilities
- CVE-2026-42599: Svelte XSS via spread attributes in SSRmediumCVSS 4EPSS 0.2%
- CVE-2026-42573: Svelte DOM clobbering leading to XSS in internal framework statemediumCVSS 4EPSS 0.4%
- CVE-2026-42567: Svelte ReDoS in svelte:element tag validationmediumCVSS 4EPSS 0.4%
- Svelte SSR XSS via Insecure Promise Serialization in hydratablemediumCVSS 5.3
- Svelte XSS via insecure promise serialization in hydratablemediumCVSS 4
- CVE-2026-27902: Svelte XSS via HTML comment injection in SSR error boundarymediumCVSS 4EPSS 0.4%
- CVE-2026-27901: Svelte XSS in SSR with contenteditable bind:innerText and bind:textContentmediumCVSS 4EPSS 0.4%
- CVE-2026-27125: Svelte SSR attribute spreading prototype chain pollutionmediumCVSS 4EPSS 0.5%
- CVE-2026-27122: Svelte SSR HTML injection in svelte:element tag validationmediumCVSS 4EPSS 0.2%
- CVE-2026-27121: Svelte cross-site scripting in server-side rendering via spread attributesmediumCVSS 4EPSS 0.2%
- CVE-2026-27119: Svelte XSS in SSR option elementmediumCVSS 4EPSS 0.2%
- Svelte XSS in textarea bind:value during server-side renderingmediumCVSS 4
- CVE-2025-15265: Svelte cross-site scripting in hydratable keysmediumCVSS 4EPSS 0.4%
- CVE-2024-45047: Svelte improper HTML escaping in server-side renderinglowCVSS 3.1EPSS 0.4%
- CVE-2022-25875: Svelte XSS in server-side rendering via object toStringlowCVSS 3.1EPSS 1.4%
Most severe svelte (npm) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- Svelte SSR XSS via Insecure Promise Serialization in hydratablemediumCVSS 5.3
- CVE-2026-27125: Svelte SSR attribute spreading prototype chain pollutionmediumCVSS 4EPSS 0.5%
- CVE-2026-42567: Svelte ReDoS in svelte:element tag validationmediumCVSS 4EPSS 0.4%
- CVE-2026-27902: Svelte XSS via HTML comment injection in SSR error boundarymediumCVSS 4EPSS 0.4%
- CVE-2026-27901: Svelte XSS in SSR with contenteditable bind:innerText and bind:textContentmediumCVSS 4EPSS 0.4%
- CVE-2026-42573: Svelte DOM clobbering leading to XSS in internal framework statemediumCVSS 4EPSS 0.4%
- CVE-2025-15265: Svelte cross-site scripting in hydratable keysmediumCVSS 4EPSS 0.4%
- CVE-2026-42599: Svelte XSS via spread attributes in SSRmediumCVSS 4EPSS 0.2%
- CVE-2026-27122: Svelte SSR HTML injection in svelte:element tag validationmediumCVSS 4EPSS 0.2%
- CVE-2026-27121: Svelte cross-site scripting in server-side rendering via spread attributesmediumCVSS 4EPSS 0.2%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/svelte.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "svelte (npm) vulnerabilities", https://junglewise.ai/threats/technologies/svelte, 26 September 2026.