Seroval: `fromJSON()` Promise thenable assimilation invokes plugin-produced callables (bypass of GHSA-mv8w-475r-vwqw)
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 `seroval@1.5.3` (GHSA-mv8w-475r-vwqw / CVE-2026-59940) and affects every plugin-capable release from `0.12.0` through the current `1.6.0`.
GHSA-p6vx-979v-rg4c
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:GHSA-p6vx-979v-rg4c
seroval
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1.6.2
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "0.12.0"
},
{
"fixed": "1.6.2"
}
]
}
],
"package": {
"name": "seroval",
"purl": "pkg:npm/seroval",
"ecosystem": "npm"
},
"database_specific": {
"source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-p6vx-979v-rg4c/GHSA-p6vx-979v-rg4c.json",
"last_known_affected_version_range": "<= 1.6.0"
}
}
]- Related CVEs
- CVE-2026-104846
Source reference:
/aliases
Publisher severity
critical
Source reference: /database_specific/severity
- Event
- #85958 · Revision 1
- Added to Heist Feed
- Publisher date