CVE-2026-128119

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure.

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-11-12 22:42 UTC ReservedThe CVE id was reserved by its CNA
2. 2026-11-13 20:18 UTC PublishedDisclosed publicly on CVE.org and NVD
3. 2026-11-13 22:14 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: not scored yet.
• Severity: 5.9 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2026-11-13 20:18 UTC

Last modified

2026-11-13 22:14 UTC

Weakness

CWE-863 · Incorrect authorization

Record status

Deferred

Attack profile CVSS 3.1 · 5.9

Attack vector

Network

Complexity

High

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2026-128119.md and follow it. Check whether this project is affected by CVE-2026-128119. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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