CVE-2026-82261SvelteKit before 2.52.2 CPU Exhaustion via Remote Form Deserialization
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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SvelteKit (@sveltejs/kit) versions >=2.49.0 and <=2.52.1 with experimental remote functions and form enabled contain a CPU exhaustion vulnerability in form deserialization. An attacker can send malformed form data to cause the server to become unresponsive while processing the request, resulting in denial of service. Fixed in 2.52.2.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-400
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Analyzed
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
sveltejs kit sveltejs:kit (from the name) | from 2.49.0 before 2.52.1; 2.52.1 not affected | CNA record |
svelte sveltekit svelte:sveltekit | from 2.49.0 before 2.52.2 | NVD |
References
- https://github.com/sveltejs/kit/security/advisories/GHSA-88qp-p4qg-rqm6vendor-advisory
- https://www.vulncheck.com/advisories/sveltekit-before-2.52.2-cpu-exhaustion-via-remote-form-deserializationthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.