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    CVE-2026-82257

    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.

    Published:Aug 28, 2026
    Last Modified:Aug 31, 2026
    EPS:Aug 28, 2026
    EPSS Score:0.00205
    CVSS Score:4.3

    Affected Products

    Vendor
    Svelte
    Product
    Kit
    Vendor
    Svelte
    Product
    Sveltekit

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-82260 (CVSS 8.7) — SvelteKit (@sveltejs/kit) versions >=2.49.0 and <=2.52.1 with experimental remote functions (experimental.remo…
    CVE-2026-82259 (CVSS 8.7) — SvelteKit versions from 2.49.0 through 2.53.2 (fixed in 2.53.3) contain a deserialization expansion issue in t…
    CVE-2026-82258 (CVSS 5.9) — SvelteKit versions from 2.38.0 before 2.60.1 contain a race condition in query.batch that allows concurrent re…
    CVE-2026-82256 (CVSS 6.9) — SvelteKit before 2.69.1 fails to properly validate remote form function payload sizes, allowing attackers to c…
    CVE-2026-66062 (CVSS 5.3) — SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.7…
    CVE-2026-40074 (CVSS 6.3) — SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.5…
    CVE-2026-40073 (CVSS 8.2) — SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.5…
    CVE-2026-27118 (CVSS 5.3) — SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Versions of …
    CVE-2026-22803 (CVSS 8.2) — SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. From 2.49.0 …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High