{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "f1ffcc96d259f9b5b3d71feb262b58240c90e7b7"
            }
          ],
          "repo": "https://github.com/lxsmnsyc/seroval",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-p6vx-979v-rg4c"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-843"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104846.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "0.12.0"
          },
          {
            "fixed": "1.6.2"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "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.",
  "id": "CVE-2026-104846",
  "modified": "2026-10-06T10:30:57.110649213Z",
  "published": "2026-10-02T15:59:45.802Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104846.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-p6vx-979v-rg4c"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-104846"
    },
    {
      "type": "FIX",
      "url": "https://github.com/lxsmnsyc/seroval/commit/f1ffcc96d259f9b5b3d71feb262b58240c90e7b7"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Seroval: `fromJSON()` Promise thenable assimilation invokes plugin-produced callables (bypass of CVE-2026-59940)"
}