# CVE-2026-128119: SvelteKit: Private `query.batch` functions could collide, producing unexpected parameter / function combinations

Status: published. Published: 2026-11-13. Updated: 2026-11-13.

SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. From version 2.60.1 until 3.1.1, applications using the experimental remote functions flag could assign the same generated identifier to separate non-exported query.batch functions. When those private functions shared a request batch, arguments intended for one function could be passed to another function, causing unexpected cross-function processing and possible disclosure of function arguments. This issue is fixed in 3.1.1.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- sveltejs / kit: >= 2.60.1, < 3.1.1 (affected). Source: CNA: GitHub_M

## Severity and prioritization

- CVSS 3.1: 5.9 (medium); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N; source: CNA: GitHub_M

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-863

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/sveltejs/kit/security/advisories/GHSA-6cf5-gc4q-fm3x (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/sveltejs/kit/commit/2c190febe78a15cac21be539ed9e99dc2d414b60 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@3.1.1 (CNA: GitHub_M; x_refsource_MISC)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-128119; retrieved 2026-11-13; source updated 2026-11-13

Revision: 79e10d6b9eb8047b056ca7d6c8b205c3d7a53fa0980846d9cf921d9c54e0740a

Canonical: https://y2.dev/cve/CVE-2026-128119

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