GHSA-29g2-3rmr-qm68: Medium severity npm/@sveltejs/kit vulnerability

Published Aug 7, 2026
·
Updated

Impact SvelteKit is vulnerable to remote CPU-exhaustion DoS attacks via specifically-crafted Accept headers. The impact is mitigated by default header length limits on most platforms, but in the case of raised or absent limits a denial of service is possible.

Patches The vulnerability is patched in @sveltejs/kit version 2.70.2.

Affected Software

1 affected componentFixes available
npm/@sveltejs/kit<=2.70.1
2.70.2

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade npm/@sveltejs/kit to a version that resolves this vulnerability.

    Fixed in 2.70.2
  2. Upgrade

    Upgrade @sveltejs/kit to a version that resolves this vulnerability.

    Fixed in 2.70.2

Event History

Aug 7, 2026
Advisory Published
via GitHub·04:50 PM
Data Sourced
via GitHub·04:50 PM
DescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

What is the severity of GHSA-29g2-3rmr-qm68?

The severity of GHSA-29g2-3rmr-qm68 is rated as medium with a score of 5.3.

2

What impact does GHSA-29g2-3rmr-qm68 have on applications?

GHSA-29g2-3rmr-qm68 allows for remote CPU-exhaustion DoS attacks through specifically-crafted Accept headers.

3

How do I fix GHSA-29g2-3rmr-qm68?

To fix GHSA-29g2-3rmr-qm68, you should update to the patched version of the SvelteKit library.

4

Is there a way to mitigate GHSA-29g2-3rmr-qm68?

Mitigation for GHSA-29g2-3rmr-qm68 is possible by enforcing default header length limits on your application.

5

What software is affected by GHSA-29g2-3rmr-qm68?

GHSA-29g2-3rmr-qm68 affects the npm package @sveltejs/kit.

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