{"answers":{"affected":"2 open source packages ship an affected version, including telejson.","exploited":"There is no known exploitation of CVE-2026-47099 in the wild and no public exploit code.","fix":"Upgrade telejson to 6.0.0 or later.","what":"CVE-2026-47099 is a low-severity cross-site scripting vulnerability in storybookjs telejson, published on 20 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 CVE-2026-47099 and fix it if it is affected.\n\nWhat it is: CVE-2026-47099 is a low-severity cross-site scripting vulnerability in storybookjs telejson, published on 20 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 CVE-2026-47099 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- telejson (npm): affected all versions; fixed in 6.0.0\n- telejson (npm): affected all versions; fixed in 6.0.0\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-2026-47099/ (Markdown: https://insights.sbomify.com/CVE-2026-47099/index.md)","id":"CVE-2026-47099","markdown":"https://insights.sbomify.com/CVE-2026-47099/index.md","name":"CVE-2026-47099","record":{"aliases":["GHSA-ccgf-5rwj-j3hv"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript JSON library","requires_auth":"none","summary":"Attackers can execute arbitrary JavaScript via crafted JSON payloads in TeleJSON, impacting applications using this library for parsing.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":2.1,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"TeleJSON prior to 6.0.0 contains a DOM-based cross-site scripting vulnerability in the parse() function that allows attackers to execute arbitrary JavaScript by delivering a crafted JSON payload containing a malicious _constructor-name_ property value. The custom reviver passes the constructor name directly to new Function() without sanitization when recreating object prototypes, enabling attackers to inject arbitrary JavaScript through vectors such as postMessage in cross-frame communication contexts to achieve script execution within the application.","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":"TeleJSON \u003c 6.0.0 DOM-based XSS via parse() Function","id":"CVE-2026-47099","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"Funnel Builder for WooCommerce Checkout \u003c 3.15.0.3 Missing Authorization via AJAX","id":"CVE-2026-47100"},"packages":[{"ecosystem":"npm","fixed":["6.0.0"],"introduced":["0"],"last_affected":[],"package":"telejson","purl":null,"source":"GHSA-ccgf-5rwj-j3hv"},{"ecosystem":"npm","fixed":["6.0.0"],"introduced":["0"],"last_affected":[],"package":"telejson","purl":"pkg:npm/telejson","source":"GHSA-ccgf-5rwj-j3hv"}],"prev":{"headline":"AJA HELO Plus \u003c 2.1.7 Hardcoded AES Passphrase for Diagnostics Export Bundle","id":"CVE-2026-47097"},"products":["telejson"],"published":"2026-05-20","related":[],"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":"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":["storybookjs"]},"summary":"Attackers can execute arbitrary JavaScript via crafted JSON payloads in TeleJSON, impacting applications using this library for parsing.","url":"https://insights.sbomify.com/CVE-2026-47099/"}