En resumen
- CVE-2026-104846 es una vulnerabilidad CRÍTICO (CVSS 9.8) que afecta a seroval.
- Probabilidad de explotación en los próximos 30 días (EPSS): 0.34%, mayor que el 28.1% de las vulnerabilidades.
- Solución: actualizar a 1.6.2 o posterior.
| Package | Affected versions | Patched versions |
|---|
| seroval npm | ≥ 0.12.0, < 1.6.2
| 1.6.2
|
Description
A fulfilled Promise node deserialized by fromJSON() can trigger unintended invocation of a plugin-produced callable through native ECMAScript thenable assimilation. This bypasses the type-confusion fix in [email protected] (GHSA-mv8w-475r-vwqw / CVE-2026-59940) and affects every plugin-capable release from 0.12.0 through the current 1.6.0.
NVD description
Seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. From 0.12.0 until 1.6.2, fromJSON deserialization of a fulfilled Promise control node can pass a plugin-produced callable-bearing thenable to a native Promise resolver. ECMAScript thenable assimilation then invokes the callable unexpectedly, allowing attacker-controlled JSON to trigger code in applications using plugin-capable Seroval releases. This path bypasses the Promise resolver type-confusion remediation in version 1.5.3 for CVE-2026-59940 because the unexpected invocation occurs through native Promise settlement after the referenced value is deserialized. This issue is fixed in version 1.6.2.
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