GHSA-p6vx-979v-rg4c

Suggest an improvement
Source
https://github.com/advisories/GHSA-p6vx-979v-rg4c
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-p6vx-979v-rg4c/GHSA-p6vx-979v-rg4c.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-p6vx-979v-rg4c
Aliases
Published
2026-10-05T23:40:43Z
Modified
2026-10-06T00:00:08Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Seroval: `fromJSON()` Promise thenable assimilation invokes plugin-produced callables (bypass of GHSA-mv8w-475r-vwqw)
Details

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.

Database specific 
{
    "cwe_ids":  [
        "CWE-843"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-10-05T23:40:43Z",
    "nvd_published_at":  "2026-10-02T16:16:47Z",
    "severity":  "CRITICAL"
}
References

Affected packages

npm / seroval

Package

Name
seroval
View open source insights on deps.dev
Purl
pkg:npm/seroval

Affected ranges

Type
SEMVER
Events
Introduced
0.12.0
Fixed
1.6.2

Database specific

last_known_affected_version_range 
"<= 1.6.0"
source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-p6vx-979v-rg4c/GHSA-p6vx-979v-rg4c.json"