CVE-2026-104845High· 7.5▾ TwilightSeroval 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 d…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 4.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.4%
Last analysed / modified upstream
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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
seroval <= 1.6.2Patched in:
seroval 1.6.3Source: https://github.com/advisories/GHSA-jp82-f5mq-hwhp
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-116584High· 7.5Seroval `fromJSON`/`fromCrossJSON` denial of service via unvalidated array node length
CVE-2026-116583Medium· 5.3Seroval: Code injection through a typed array's own constructor property
CVE-2026-116582Medium· 4.7Seroval: Script injection through RegExp sources in serialized output
CVE-2026-116581High· 7.5Seroval: fromJSON deserializer trusts node-supplied array length and sequence doneAt (unauthenticated event-loop DoS)
CVE-2026-116580High· 7.3Seroval: Deserialization invokes attacker-chosen callables: AsyncIteratorFactoryInstance calls source.on(listener) without type check
CVE-2026-104846Critical· 9.8Seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities