{"id":"EUVD-2026-91744","revision":null,"records":[{"revision":"0560b6988848476a8709afa600793f52","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-104845","aliases":[],"title":"Seroval: Memory exhaustion via unchecked TypedArray length in JSON deserialization","description":"Seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. Prior to 1.6.3, deserializeTypedArray in fromJSON and fromCrossJSON trusts a deserialized source value as an ArrayBuffer and does not bound the serialized element count. An attacker can provide a small untrusted JSON object with a large length value, causing the array-like TypedArray constructor to synchronously allocate the selected number of elements and exhaust CPU or memory while starving the event loop. The offset check does not reject the crafted source because source.byteLength is undefined. DataView reaches a similar unchecked cast but throws rather than allocating, and the issue has no identified confidentiality or integrity impact. This issue is fixed in version 1.6.3.","state":0,"publishedAt":"2026-10-02T15:55:21.197+00:00","modifiedAt":"2026-10-06T16:34:23.733+00:00","affected":[{"ecosystem":"Vendor product","name":"seroval","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"lxsmnsyc\",\n                    \"product\": \"seroval\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.6.3\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-jp82-f5mq-hwhp","https://github.com/lxsmnsyc/seroval/commit/ac0163e420ac7dcbbefac4d069bcefad300a4851","https://github.com/lxsmnsyc/seroval/commit/e54a6f62784b9e48e3a5fa2ab4089ca69fb8996e"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-104845","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-104845","identifiers":["CVE-2026-104845"]},"retained":false,"historicalAffected":[]},{"revision":"904774095d984ed18f2b619d92cc1df5","observedAt":"2026-11-11T05:30:23.099+00:00","statement":{"source":"euvd","id":"EUVD-2026-91744","aliases":["CVE-2026-104845","GHSA-jp82-f5mq-hwhp"],"title":"Seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. Prior to 1.6.3, deserializeTypedArray in fromJSON and fromCrossJSON trusts a deserialized source value as an ArrayBuffer and does…","description":"Seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. Prior to 1.6.3, deserializeTypedArray in fromJSON and fromCrossJSON trusts a deserialized source value as an ArrayBuffer and does not bound the serialized element count. An attacker can provide a small untrusted JSON object with a large length value, causing the array-like TypedArray constructor to synchronously allocate the selected number of elements and exhaust CPU or memory while starving the event loop. The offset check does not reject the crafted source because source.byteLength is undefined. DataView reaches a similar unchecked cast but throws rather than allocating, and the issue has no identified confidentiality or integrity impact. This issue is fixed in version 1.6.3.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":null}],"references":["https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-jp82-f5mq-hwhp","https://github.com/lxsmnsyc/seroval/commit/ac0163e420ac7dcbbefac4d069bcefad300a4851","https://github.com/lxsmnsyc/seroval/commit/e54a6f62784b9e48e3a5fa2ab4089ca69fb8996e"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-91744","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Oct 2, 2026, 3:55:21 PM","dateUpdated":"Oct 6, 2026, 4:34:23 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-2026-91744","identifiers":["EUVD-2026-91744","CVE-2026-104845","GHSA-jp82-f5mq-hwhp"]},"retained":false,"historicalAffected":[]},{"revision":"ac74aa2e21aa46ffbeb544141a1579cf","observedAt":"2026-10-25T04:17:29.458+00:00","statement":{"source":"nvd","id":"CVE-2026-104845","aliases":[],"title":"Seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. Prior to 1.6.3, deserializeTypedArray in fromJSON and fromCrossJSON trusts a deserialized source value as an ArrayBuffer and does…","description":"Seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. Prior to 1.6.3, deserializeTypedArray in fromJSON and fromCrossJSON trusts a deserialized source value as an ArrayBuffer and does not bound the serialized element count. An attacker can provide a small untrusted JSON object with a large length value, causing the array-like TypedArray constructor to synchronously allocate the selected number of elements and exhaust CPU or memory while starving the event loop. The offset check does not reject the crafted source because source.byteLength is undefined. DataView reaches a similar unchecked cast but throws rather than allocating, and the issue has no identified confidentiality or integrity impact. This issue is fixed in version 1.6.3.","state":0,"publishedAt":"2026-10-02T16:16:47.07+00:00","modifiedAt":"2026-10-06T17:17:15.587+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/lxsmnsyc/seroval/commit/ac0163e420ac7dcbbefac4d069bcefad300a4851","https://github.com/lxsmnsyc/seroval/commit/e54a6f62784b9e48e3a5fa2ab4089ca69fb8996e","https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-jp82-f5mq-hwhp"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-104845","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-770"],"productCriteria":[],"sourceDates":{"published":"2026-10-02T16:16:47.070","lastModified":"2026-10-06T17:17:15.587"},"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-2026-104845","identifiers":["CVE-2026-104845"]},"retained":false,"historicalAffected":[]},{"revision":"3f34601c4314468c93743e63d8cbd16e","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-jp82-f5mq-hwhp","aliases":["CVE-2026-104845"],"title":"Seroval: Memory exhaustion via unchecked TypedArray length in JSON deserialization","description":"# Summary\n\ndeserializeTypedArray casts the source node to ArrayBuffer without checking it and never bounds the element count. Pass a plain object with a length property and it hits the array-like TypedArray constructor, allocating that many elements. The offset guard above it can't stop this: source.byteLength is undefined, so the comparison is always false.\n\nThe length is one integer in the JSON, so a tiny payload can name any allocation size, and it runs synchronously inside fromJSON, starving the event loop instead of just slowing one request. fromCrossJSON is the same.\n\nImpact is unauthenticated CPU/memory exhaustion for any service deserializing untrusted Seroval JSON: same profile as the array-length and nested-depth DoS issues already fixed here. No confidentiality or integrity impact. DataView has the same unchecked cast but throws instead of allocating. A runtime instanceof ArrayBuffer check plus a size cap should fix it.","state":0,"publishedAt":"2026-10-05T23:40:40+00:00","modifiedAt":"2026-10-05T23:45:07.4319235+00:00","affected":[{"ecosystem":"npm","name":"seroval","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"1.6.3"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-jp82-f5mq-hwhp","https://nvd.nist.gov/vuln/detail/CVE-2026-104845","https://github.com/lxsmnsyc/seroval/commit/ac0163e420ac7dcbbefac4d069bcefad300a4851","https://github.com/lxsmnsyc/seroval/commit/e54a6f62784b9e48e3a5fa2ab4089ca69fb8996e","https://github.com/lxsmnsyc/seroval"],"sourceUrl":"https://github.com/advisories/GHSA-jp82-f5mq-hwhp","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-jp82-f5mq-hwhp","identifiers":["GHSA-jp82-f5mq-hwhp","CVE-2026-104845"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-daa70f0e05b540b28ec429806bdccfc4","complete":false,"records":13759,"lastAttemptAt":"2026-11-11T15:09:37.2726122+00:00","lastSuccessAt":"2026-11-11T15:09:37.269+00:00","error":null,"lastVerifiedAt":"2026-11-11T15:09:37.269+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13582,"expectedIdentifiers":13813,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. 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