Memory Allocation with Excessive Size Value Affecting @sveltejs/kit package, versions >=2.49.0 <2.49.5
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published16 Jan 2026
- disclosed15 Jan 2026
- credithashcoko
Introduced: 15 Jan 2026
CVE-2026-22803 (opens in a new tab)How to fix?
Upgrade @sveltejs/kit to version 2.49.5 or higher.
Overview
@sveltejs/kit is a SvelteKit framework and CLI
Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value in the deserialize_binary_form() function via Remote Form endpoint. An attacker can cause excessive memory allocation by sending a specially crafted payload with a small header indicating a large data length and then stalling the connection, leading the server to allocate large buffers and potentially exhaust memory resources.