Vendor
Sveltejs vulnerabilities
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Junglewise Threat Intelligence has tracked 7 vulnerabilities in Sveltejs: 6 in the last 7 days and 7 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-123569, was published on 8 November 2026. 6 vulnerabilities in the last four weeks, up 500% on the four before (1). 1 technology has a page of its own.
- Last 7 days
- 6
- Last 90 days
- 7
- Critical, all time
- 0
- Exploited in the wild
- 0
About Sveltejs
Company that develops and maintains Svelte, a JavaScript framework for building user interfaces.
Sveltejs technologies
Latest Sveltejs vulnerabilities
- CVE-2026-123569: devalue sparse array denial of service via CPU and memory exhaustionhighCVSS 7.5
- CVE-2026-123568: Sveltejs devalue prototype pollution in unevalmediumCVSS 4.4
- CVE-2026-123566: Sveltejs devalue denial of service in unevalhighCVSS 7.5
- CVE-2026-123565: Sveltejs devalue resource exhaustion in unevalhighCVSS 7.5
- CVE-2026-123564: Sveltejs devalue memory exhaustion in uneval sparse arrayshighCVSS 7.5
- CVE-2026-123562: devalue unhandled promise rejection in stringifyAsynchighCVSS 7.5
- devalue ArrayBuffer allocation bypass via custom reviverhighCVSS 4
Most severe Sveltejs vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-123569: devalue sparse array denial of service via CPU and memory exhaustionhighCVSS 7.5
- CVE-2026-123566: Sveltejs devalue denial of service in unevalhighCVSS 7.5
- CVE-2026-123565: Sveltejs devalue resource exhaustion in unevalhighCVSS 7.5
- CVE-2026-123564: Sveltejs devalue memory exhaustion in uneval sparse arrayshighCVSS 7.5
- CVE-2026-123562: devalue unhandled promise rejection in stringifyAsynchighCVSS 7.5
- devalue ArrayBuffer allocation bypass via custom reviverhighCVSS 4
- CVE-2026-123568: Sveltejs devalue prototype pollution in unevalmediumCVSS 4.4
Vulnerabilities per week
6 vulnerabilities in the last four weeks, up 500% on the four before (1). The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 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 | |
| 28 Sep 2026 | 1 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 6 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Sveltejs vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/vendors/sveltejs)<a href="https://junglewise.ai/threats/vendors/sveltejs"><img src="https://junglewise.ai/threats/vendors/sveltejs/badge.svg" alt="Sveltejs vulnerabilities" /></a>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/vendors/sveltejs.json, and this page as text at https://junglewise.ai/threats/vendors/sveltejs.md, 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, "Sveltejs vulnerabilities", https://junglewise.ai/threats/vendors/sveltejs, 9 November 2026.