CVE-2026-22803

HIGH EPSS 40.6%
Published Jan 15, 20265mo ago · Modified Jun 17, 20262w ago
8.2 CVSS 4.0
High
Find Similar
Published Jan 15, 2026 5mo ago
Last Modified Jun 17, 2026 2w ago

Description

SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. From 2.49.0 to 2.49.4, the experimental form remote function uses a binary data format containing a representation of submitted form data. A specially-crafted payload can cause the server to allocate a large amount of memory, causing DoS via memory exhaustion. This vulnerability is fixed in 2.49.5.

CVSS Details

Base Score
8.2
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
40.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 2

CWE-770
CWE-789

Affected Products 1

VendorProductVersionRange
sveltekit*≥2.49.0  –  <2.49.5

References 3

  • github.com https://github.com/sveltejs/kit/commit/8ed8155215b9a74012fecffb942ad9a793b274e5
    Patch
  • github.com https://github.com/sveltejs/kit/releases/tag/@sveltejs%2Fadapter-node@5.5.1
    Release Notes
  • github.com https://github.com/sveltejs/kit/security/advisories/GHSA-j2f3-wq62-6q46
    Vendor Advisory

Remediation

  • github.com https://github.com/sveltejs/kit/commit/8ed8155215b9a74012fecffb942ad9a793b274e5
    Patch