{"answers":{"affected":"4 open source packages ship an affected version, including seroval.","exploited":"There is no known exploitation of CVE-2026-116582 in the wild and no public exploit code.","fix":"Upgrade seroval to a fixed version for your release line: 1.0.0 or 1.6.10.","what":"CVE-2026-116582 is a medium-severity vulnerability in lxsmnsyc seroval, published on 26 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-116582 and fix it if it is affected.\n\nWhat it is: CVE-2026-116582 is a medium-severity vulnerability in lxsmnsyc seroval, published on 26 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-116582 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- seroval (npm): affected all versions; fixed in 1.0.0\n- seroval (npm): affected all versions; fixed in 1.0.0\n- seroval (npm): affected from 1.5.5; fixed in 1.6.10\n- seroval (npm): affected from 1.5.5; fixed in 1.6.10\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-2026-116582/ (Markdown: https://insights.sbomify.com/CVE-2026-116582/index.md)","id":"CVE-2026-116582","markdown":"https://insights.sbomify.com/CVE-2026-116582/index.md","name":"CVE-2026-116582","record":{"aliases":["GHSA-9wx9-5pv9-3349"],"analysis":null,"analysis_generated_by":null,"assigner":"GitHub_M","cpe":[],"cvss":{"score":4.7,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"},{"id":"CWE-116","name":"Improper Encoding or Escaping of Output"}],"description":"Seroval facilitates JavaScript value stringification, including complex structures beyond JSON.stringify capabilities. Prior to 1.0.0 and from 1.5.5 until 1.6.10, the JavaScript-output APIs serialize a RegExp source containing a less-than character without the escaping needed for an HTML script element. An application is affected when it builds regular expression syntax from untrusted input, serializes that RegExp through serialize, serializeAsync, crossSerialize, crossSerializeAsync, crossSerializeStream, Serializer, or compileJSON, and embeds the result in an HTML script element. The crafted source can terminate the element and execute script in the page received by another user. This issue is fixed in version 1.6.10.","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":"Seroval: Script injection through RegExp sources in serialized output","id":"CVE-2026-116582","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":null,"year":"2026"},"n_packages":4,"n_references":3,"next":{"headline":"Seroval: Code injection through a typed array's own constructor property","id":"CVE-2026-116583"},"packages":[{"ecosystem":"npm","fixed":["1.0.0"],"introduced":["0"],"last_affected":[],"package":"seroval","purl":null,"source":"GHSA-9wx9-5pv9-3349"},{"ecosystem":"npm","fixed":["1.0.0"],"introduced":["0"],"last_affected":[],"package":"seroval","purl":"pkg:npm/seroval","source":"GHSA-9wx9-5pv9-3349"},{"ecosystem":"npm","fixed":["1.6.10"],"introduced":["1.5.5"],"last_affected":[],"package":"seroval","purl":null,"source":"GHSA-9wx9-5pv9-3349"},{"ecosystem":"npm","fixed":["1.6.10"],"introduced":["1.5.5"],"last_affected":[],"package":"seroval","purl":"pkg:npm/seroval","source":"GHSA-9wx9-5pv9-3349"}],"prev":{"headline":"Seroval: fromJSON deserializer trusts sequence doneAt (unauthenticated event-loop DoS)","id":"CVE-2026-116581"},"products":["seroval"],"published":"2026-10-26","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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-10-26","vendors":["lxsmnsyc"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-116582/"}