cve.bz

CVE-2026-22803

8.2 highEPSS 0.6%

High (8.2) in svelte kit. EPSS 0.6% chance of exploitation in the next 30 days. Fixed in @sveltejs/kit 2.49.5.

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.

Severity

CVSS 4.0

8.2 high
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

CVSS 3.1

7.5 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
0.6% chance of exploitation in the next 30 days; higher than 48% of CVEs (scores of 2026-10-31)
CWEs
CWE-770, CWE-789
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-j2f3-wq62-6q46npm@sveltejs/kit>=2.49.0 <2.49.52.49.5

References

Check your stackJSON