CVE-2026-82257SvelteKit before 2.69.1 Prototype Pollution via File Input
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
SvelteKit versions before 2.69.1 contain a prototype pollution vulnerability in remote form functions with file input fields that accept arbitrary user-controlled path names. Attackers can manipulate the deletion path to remove methods on the prototype, potentially disabling application functionality.
- CVSS
- 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
- Weakness (CWE)
- CWE-1321
- 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) | before 2.69.1; 2.69.1 not affected | CNA record |
svelte sveltekit svelte:sveltekit | before 2.69.1 | NVD |
References
- https://github.com/sveltejs/kit/security/advisories/GHSA-866w-xmhq-wj7xvendor-advisory
- https://www.vulncheck.com/advisories/sveltekit-before-2.69.1-prototype-pollution-via-file-inputthird-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.