CVE-2026-22803
Last modified
CVE-2026-22803 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.53% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Svelte | Kit | >= 2.49.0, < 2.49.5 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-22803?
How severe is CVE-2026-22803?
How do I fix CVE-2026-22803?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-22797An issue was discovered in OpenStack keystonemiddleware 10.5…9.9
- CVE-2026-22798hermes is an implementation of the HERMES workflow to automa…5
- CVE-2026-22799Emlog is an open source website building system. emlog v2.6.…8.8
- CVE-2026-2280The rexCrawler plugin for WordPress is vulnerable to Stored …4.8
- CVE-2026-22800PILOS (Platform for Interactive Live-Online Seminars) is a f…4.5
- CVE-2026-22801LIBPNG is a reference library for use in applications that r…7.8
- CVE-2026-22804Termix is a web-based server management platform with SSH te…4.7
- CVE-2026-22805Metabase is an open-source data analytics platform. Prior to…8.6
- CVE-2026-22806vCluster Platform provides a Kubernetes platform for managin…9.1
- CVE-2026-22807vLLM is an inference and serving engine for large language m…9.8
- CVE-2026-22808fleetdm/fleet is open source device management software. Pri…5.4
- CVE-2026-22809tarteaucitron.js is a compliant and accessible cookie banner…4.4
Are you affected by CVE-2026-22803?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST