{"answers":{"affected":"2 open source packages ship an affected version, including svelte.","exploited":"There is no known exploitation of GHSA-f3cj-j4f6-wq85 in the wild and no public exploit code.","fix":"Upgrade svelte to 5.55.7 or later.","what":"GHSA-f3cj-j4f6-wq85 is a cross-site scripting vulnerability in svelte, published on 14 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for GHSA-f3cj-j4f6-wq85 and fix it if it is affected.\n\nWhat it is: GHSA-f3cj-j4f6-wq85 is a cross-site scripting vulnerability in svelte, published on 14 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of GHSA-f3cj-j4f6-wq85 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- svelte (npm): affected from 5.46.0; fixed in 5.55.7\n- svelte (npm): affected from 5.46.0; fixed in 5.55.7\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/GHSA-f3cj-j4f6-wq85/ (Markdown: https://insights.sbomify.com/GHSA-f3cj-j4f6-wq85/index.md)","id":"GHSA-f3cj-j4f6-wq85","markdown":"https://insights.sbomify.com/GHSA-f3cj-j4f6-wq85/index.md","name":"GHSA-f3cj-j4f6-wq85","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":true,"product_category":"Svelte frontend library","requires_auth":"none","summary":"An XSS vulnerability in Svelte's experimental hydratable feature allows attackers to execute scripts if attacker-controlled input is passed to promise serialization.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"Contents of `hydratable` promises were not properly stringified, potentially leading to an XSS exploit. You are vulnerable if all of the following is true:\n- you are using `hydratable` (an experimental feature at the time of this report)\n- you are passing attacker-controlled input such that a synchronous value is hydrated, then a promise value, e.g. `hydratable('someKey', () =\u003e [synchronousValue, promiseValue])`","ecosystems":["npm"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":true,"headline":"Svelte: SSR XSS via Insecure Promise Serialization in hydratable","id":"GHSA-f3cj-j4f6-wq85","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"npm","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":2,"n_references":null,"packages":[{"ecosystem":"npm","fixed":["5.55.7"],"introduced":["5.46.0"],"last_affected":[],"package":"svelte","purl":null,"source":"GHSA-f3cj-j4f6-wq85"},{"ecosystem":"npm","fixed":["5.55.7"],"introduced":["5.46.0"],"last_affected":[],"package":"svelte","purl":"pkg:npm/svelte","source":"GHSA-f3cj-j4f6-wq85"}],"products":null,"published":"2026-05-14","related":[],"sources":[{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":"An XSS vulnerability in Svelte's experimental hydratable feature allows attackers to execute scripts if attacker-controlled input is passed to promise serialization.","url":"https://insights.sbomify.com/GHSA-f3cj-j4f6-wq85/"}