CVE-2026-27118

2026-02-20 [email protected] GHSA-9pq4-5hcf-288c

Lifecycle Timeline

3
Patch Released
Mar 31, 2026 - 21:13 nvd
Patch available
Analysis Generated
Mar 12, 2026 - 22:04 vuln.today
CVE Published
Feb 20, 2026 - 22:16 nvd
N/A

Tags

CSRF

Description

SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Versions of @sveltejs/adapter-vercel prior to 6.3.2 are vulnerable to cache poisoning. An internal query parameter intended for Incremental Static Regeneration (ISR) is accessible on all routes, allowing an attacker to cause sensitive user-specific responses to be cached and served to other users. Successful exploitation requires a victim to visit an attacker-controlled link while authenticated. Existing deployments are protected by Vercel's WAF, but users should upgrade as soon as possible. This vulnerability is fixed in 6.3.2.

Analysis

SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Versions of @sveltejs/adapter-vercel prior to 6.3.2 are vulnerable to cache poisoning.

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Priority Score

0
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +0
POC: 0

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CVE-2026-27118 vulnerability details – vuln.today
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