{"answers":{"affected":"2 open source packages ship an affected version, including @sveltejs/kit. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-22803 in the wild and no public exploit code.","fix":"Upgrade @sveltejs/kit to 2.49.5 or later.","what":"CVE-2026-22803 is a high-severity denial of service vulnerability in sveltejs kit, published on 15 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-22803 and fix it if it is affected.\n\nWhat it is: CVE-2026-22803 is a high-severity denial of service vulnerability in sveltejs kit, published on 15 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-22803 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- @sveltejs/kit (npm): affected from 2.49.0; fixed in 2.49.5\n- @sveltejs/kit (npm): affected from 2.49.0; fixed in 2.49.5\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-22803/ (Markdown: https://insights.sbomify.com/CVE-2026-22803/index.md)","id":"CVE-2026-22803","markdown":"https://insights.sbomify.com/CVE-2026-22803/index.md","name":"CVE-2026-22803","record":{"aliases":["GHSA-j2f3-wq62-6q46"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"SvelteKit framework","requires_auth":"none","summary":"Attackers can cause server memory exhaustion and denial of service via crafted payloads in experimental remote functions.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"kit","vendor":"svelte"}],"cvss":{"score":8.2,"severity":"high","source":"cna","vector":"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","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"},{"id":"CWE-789","name":"Memory Allocation with Excessive Size Value"}],"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.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"SvelteKit has a memory amplification DoS in Remote Functions binary form deserializer","id":"CVE-2026-22803","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"Cross-site scripting in Termix","id":"CVE-2026-22804"},"packages":[{"ecosystem":"npm","fixed":["2.49.5"],"introduced":["2.49.0"],"last_affected":[],"package":"@sveltejs/kit","purl":null,"source":"GHSA-j2f3-wq62-6q46"},{"ecosystem":"npm","fixed":["2.49.5"],"introduced":["2.49.0"],"last_affected":[],"package":"@sveltejs/kit","purl":"pkg:npm/%40sveltejs/kit","source":"GHSA-j2f3-wq62-6q46"}],"prev":{"headline":"LIBPNG has an integer truncation causing heap buffer over-read in png_image_write_*","id":"CVE-2026-22801"},"products":["kit"],"published":"2026-01-15","related":[{"cvss_score":8.2,"headline":"SvelteKit has a BODY_SIZE_LIMIT bypass in @sveltejs/adapter-node","id":"CVE-2026-40073","kev_date_added":null,"published":"2026-04-10"},{"cvss_score":6.3,"headline":"SvelteKit's invalidated redirect in handle hook causes Denial-of-Service","id":"CVE-2026-40074","kev_date_added":null,"published":"2026-04-10"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-01-15","vendors":["sveltejs"]},"summary":"Attackers can cause server memory exhaustion and denial of service via crafted payloads in experimental remote functions.","url":"https://insights.sbomify.com/CVE-2026-22803/"}