{"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-2026-82258 in the wild and no public exploit code.","fix":"Upgrade @sveltejs/kit to 2.60.1 or later.","what":"CVE-2026-82258 is a medium-severity vulnerability in sveltejs kit, published on 28 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-82258 and fix it if it is affected.\n\nWhat it is: CVE-2026-82258 is a medium-severity vulnerability in sveltejs kit, published on 28 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-82258 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- @sveltejs/kit (npm): affected from 2.38.0; fixed in 2.60.1\n- @sveltejs/kit (npm): affected from 2.38.0; fixed in 2.60.1\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-2026-82258/ (Markdown: https://insights.sbomify.com/CVE-2026-82258/index.md)","id":"CVE-2026-82258","markdown":"https://insights.sbomify.com/CVE-2026-82258/index.md","name":"CVE-2026-82258","record":{"aliases":["GHSA-hgv7-v322-mmgr","GHSA-m99x-q38g-c4c6"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"SvelteKit framework","requires_auth":"low_privilege","summary":"Attackers can exploit a race condition in SvelteKit's query.batch to access sensitive data from other users' concurrent requests.","user_interaction":"required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[{"product":"sveltekit","vendor":"svelte"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-362","name":"Concurrent Execution using Shared Resource with Improper Synchronization"}],"description":"SvelteKit versions from 2.38.0 before 2.60.1 contain a race condition in query.batch that allows concurrent requests from different users to merge under a single request context. Attackers can exploit specific timing conditions to access sensitive data from other users' concurrent requests.","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":false,"headline":"SvelteKit 2.38.0 before 2.60.1 Cross-User Data Disclosure via query.batch","id":"CVE-2026-82258","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"race_condition","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"SvelteKit 2.49.0 before 2.53.3 Denial of Service via form","id":"CVE-2026-82259"},"packages":[{"ecosystem":"npm","fixed":["2.60.1"],"introduced":["2.38.0"],"last_affected":[],"package":"@sveltejs/kit","purl":null,"source":"GHSA-hgv7-v322-mmgr"},{"ecosystem":"npm","fixed":["2.60.1"],"introduced":["2.38.0"],"last_affected":[],"package":"@sveltejs/kit","purl":"pkg:npm/%40sveltejs/kit","source":"GHSA-hgv7-v322-mmgr"}],"prev":{"headline":"SvelteKit before 2.69.1 Prototype Pollution via File Input","id":"CVE-2026-82257"},"products":["kit"],"published":"2026-08-28","related":[{"cvss_score":8.8,"headline":"SvelteKit framework has Insufficient CSRF protection for CORS requests","id":"CVE-2023-29008","kev_date_added":null,"published":"2023-04-06"},{"cvss_score":8.8,"headline":"SvelteKit has Insufficient Cross-Site Request Forgery Protection","id":"CVE-2023-29003","kev_date_added":null,"published":"2023-04-04"},{"cvss_score":8.7,"headline":"SvelteKit 2.49.0 before 2.53.3 Denial of Service via form","id":"CVE-2026-82259","kev_date_added":null,"published":"2026-08-28"},{"cvss_score":8.7,"headline":"SvelteKit before 2.52.2 Memory Exhaustion via Remote Form Deserialization","id":"CVE-2026-82260","kev_date_added":null,"published":"2026-08-28"},{"cvss_score":8.7,"headline":"SvelteKit before 2.52.2 CPU Exhaustion via Remote Form Deserialization","id":"CVE-2026-82261","kev_date_added":null,"published":"2026-08-28"},{"cvss_score":6.9,"headline":"SvelteKit before 2.69.1 Denial of Service via Remote Form","id":"CVE-2026-82256","kev_date_added":null,"published":"2026-08-28"}],"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-08","vendors":["sveltejs"]},"summary":"Attackers can exploit a race condition in SvelteKit's query.batch to access sensitive data from other users' concurrent requests.","url":"https://insights.sbomify.com/CVE-2026-82258/"}