{"id":"CVE-2026-116583","revision":null,"records":[{"revision":"939e38e5956e471cacae130dd10e9f0b","observedAt":"2026-10-27T15:44:06.157+00:00","statement":{"source":"cve-program","id":"CVE-2026-116583","aliases":[],"title":"Seroval: Code injection through a typed array's own constructor property","description":"Seroval facilitates JavaScript value stringification, including complex structures beyond JSON.stringify capabilities. From 1.6.0 until 1.6.11, the JavaScript-output APIs derive a typed array's constructor name from a property on the value that can be replaced by an own constructor property. When application code copies untrusted properties onto a typed array and then passes it to serialize, serializeAsync, crossSerialize, crossSerializeAsync, crossSerializeStream, Serializer, or compileJSON, the attacker-controlled name is written as executable JavaScript and can run in the page receiving the output. This issue is fixed in version 1.6.11.","state":0,"publishedAt":"2026-10-26T20:49:35.952+00:00","modifiedAt":"2026-10-27T14:18:01.418+00:00","affected":[{"ecosystem":"Vendor product","name":"seroval","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"lxsmnsyc\",\n                    \"product\": \"seroval\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 1.6.0, < 1.6.11\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-f86p-h4j2-7qgj","https://github.com/lxsmnsyc/seroval/commit/1313ebbad9687bc0245e08bfd576376e57e0e5c1","https://github.com/lxsmnsyc/seroval/releases/tag/seroval@1.6.11"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116583","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-116583","identifiers":["CVE-2026-116583"]},"retained":false,"historicalAffected":[]},{"revision":"cecbe565829f4fdda2801b917053195a","observedAt":"2026-10-28T21:57:39.23+00:00","statement":{"source":"euvd","id":"EUVD-2026-110462","aliases":["CVE-2026-116583"],"title":"Seroval facilitates JavaScript value stringification, including complex structures beyond JSON.stringify capabilities. From 1.6.0 until 1.6.11, the JavaScript-output APIs derive a typed array's constructor name from a property on the value …","description":"Seroval facilitates JavaScript value stringification, including complex structures beyond JSON.stringify capabilities. From 1.6.0 until 1.6.11, the JavaScript-output APIs derive a typed array's constructor name from a property on the value that can be replaced by an own constructor property. When application code copies untrusted properties onto a typed array and then passes it to serialize, serializeAsync, crossSerialize, crossSerializeAsync, crossSerializeStream, Serializer, or compileJSON, the attacker-controlled name is written as executable JavaScript and can run in the page receiving the output. This issue is fixed in version 1.6.11.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","score":5.3,"severity":null}],"references":["https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-f86p-h4j2-7qgj","https://github.com/lxsmnsyc/seroval/commit/1313ebbad9687bc0245e08bfd576376e57e0e5c1","https://github.com/lxsmnsyc/seroval/releases/tag/seroval@1.6.11"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-110462","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Oct 26, 2026, 8:49:35 PM","dateUpdated":"Oct 27, 2026, 2:18:01 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-110462","identifiers":["EUVD-2026-110462","CVE-2026-116583"]},"retained":false,"historicalAffected":[]},{"revision":"21ee34a3db08434aaf7eb094e42d9908","observedAt":"2026-10-28T21:57:06.789+00:00","statement":{"source":"nvd","id":"CVE-2026-116583","aliases":[],"title":"Seroval facilitates JavaScript value stringification, including complex structures beyond JSON.stringify capabilities. From 1.6.0 until 1.6.11, the JavaScript-output APIs derive a typed array's constructor name from a property on the value …","description":"Seroval facilitates JavaScript value stringification, including complex structures beyond JSON.stringify capabilities. From 1.6.0 until 1.6.11, the JavaScript-output APIs derive a typed array's constructor name from a property on the value that can be replaced by an own constructor property. When application code copies untrusted properties onto a typed array and then passes it to serialize, serializeAsync, crossSerialize, crossSerializeAsync, crossSerializeStream, Serializer, or compileJSON, the attacker-controlled name is written as executable JavaScript and can run in the page receiving the output. This issue is fixed in version 1.6.11.","state":0,"publishedAt":"2026-10-26T21:18:16.653+00:00","modifiedAt":"2026-10-27T15:16:40+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/lxsmnsyc/seroval/commit/1313ebbad9687bc0245e08bfd576376e57e0e5c1","https://github.com/lxsmnsyc/seroval/releases/tag/seroval@1.6.11","https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-f86p-h4j2-7qgj"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-116583","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-79","CWE-94"],"productCriteria":[],"sourceDates":{"published":"2026-10-26T21:18:16.653","lastModified":"2026-10-27T15:16:40.000"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-116583","identifiers":["CVE-2026-116583"]},"retained":false,"historicalAffected":[]},{"revision":"0166b7e2c6e141fe9621a3ee811eadc5","observedAt":"2026-10-28T21:55:29.474+00:00","statement":{"source":"osv","id":"GHSA-f86p-h4j2-7qgj","aliases":["CVE-2026-116583"],"title":"Seroval: Code injection through a typed array's own constructor property","description":"### Summary\n\nseroval writes a typed array as a call to its constructor. In affected versions, the constructor name in the output is read from a property that data on the value can replace, and it is written without checks. A typed array that received properties from untrusted data can then put arbitrary code into the serialized output.\n\n### Details\n\nVersion 1.6.0 changed how seroval finds the class of an object, so that objects with their own `constructor` property serialize correctly. Typed arrays still took the constructor name from the value itself, so the name could come from the untrusted property instead of the array's real type.\n\nThese functions are affected:\n\n- `serialize`, `serializeAsync`\n- `crossSerialize`, `crossSerializeAsync`, `crossSerializeStream`\n- the `Serializer` class\n- `compileJSON`\n\n`fromJSON` and `fromCrossJSON` are not affected: they only accept the names of the built-in typed arrays. With the `compactArrayBufferViews` option, the same lookup throws a `TypeError` instead of writing code.\n\n### Impact\n\nAn application is affected only when it serializes a typed array that has an own `constructor` property set from untrusted data. That requires code that copies properties from untrusted objects onto a typed array. This is unusual, so the severity is rated Low, even though the result is script execution in the page that receives the output.\n\n### Patches\n\nFixed in 1.6.11. The constructor name now comes from the array's internal type, which properties on the value cannot change. `compactArrayBufferViews` uses the real type as well.\n\n### Workarounds\n\nIf you cannot upgrade, do not copy properties from untrusted objects onto typed arrays, or remove an own `constructor` property from a typed array before serializing it.","state":0,"publishedAt":"2026-10-28T21:17:36+00:00","modifiedAt":"2026-10-28T21:30:05.8973082+00:00","affected":[{"ecosystem":"npm","name":"seroval","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"1.6.0"},{"kind":"fixed","version":"1.6.11"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-f86p-h4j2-7qgj","https://nvd.nist.gov/vuln/detail/CVE-2026-116583","https://github.com/lxsmnsyc/seroval/commit/1313ebbad9687bc0245e08bfd576376e57e0e5c1","https://github.com/lxsmnsyc/seroval","https://github.com/lxsmnsyc/seroval/releases/tag/seroval@1.6.11"],"sourceUrl":"https://github.com/advisories/GHSA-f86p-h4j2-7qgj","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-f86p-h4j2-7qgj","identifiers":["GHSA-f86p-h4j2-7qgj","CVE-2026-116583"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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