CVE-2026-104845: falha de alta gravidade em lxsmnsyc seroval
Seroval: Memory exhaustion via unchecked TypedArray length in JSON deserialization
Publicada em · Atualizada em
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 7.5epss 0.4%
probabilidade de exploração
0.4%top 65% das CVEs
exploração observada
nãonenhuma fonte reporta
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Produtos afetados
lxsmnsyc · serovalCVEs relacionadas — lxsmnsyc seroval
No mesmo produto, das mais perigosas para as menos.
CVE-2026-59940CRITICALSeroval: `seroval.fromJSON()` Promise resolver type confusion invokes attacker-controlled methods during deserializationEPSS 0.8%CVE-2026-23737HIGHseroval Affected by Remote Code Execution via JSON DeserializationEPSS 0.6%CVE-2026-23956HIGHseroval affected by Denial of Service via RegExp serializationEPSS 0.5%CVE-2026-24006HIGHSeroval affected by Denial of Service via Deeply Nested ObjectsEPSS 0.4%CVE-2026-23957HIGHseroval is vulnerable to Denial of Service via array serializationEPSS 0.4%CVE-2026-104846CRITICALSeroval: `fromJSON()` Promise thenable assimilation invokes plugin-produced callables (bypass of CVE-2026-59940)EPSS 0.3%