CVE-2026-104846

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Source
https://cve.org/CVERecord?id=CVE-2026-104846
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-104846.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-104846
Aliases
Published
2026-10-02T15:59:45Z
Modified
2026-10-04T02:41:00Z
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 CVE-2026-59940)
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.

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"
        }
    ]
}
References

Affected packages

Git / github.com/lxsmnsyc/seroval

Affected ranges

Type
GIT
Repo
https://github.com/lxsmnsyc/seroval
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
f1ffcc96d259f9b5b3d71feb262b58240c90e7b7
Database specific
Show details 
{
    "source":  "REFERENCES"
}

Affected versions

1.*
1.4.2
1.5.0
v0.*
v0.1.0
v0.10.0
v0.10.1
v0.10.2
v0.10.3
v0.10.4
v0.11.0
v0.11.1
v0.11.2
v0.11.3
v0.11.4
v0.11.5
v0.11.6
v0.12.0
v0.12.1
v0.12.2
v0.12.3
v0.12.4
v0.13.0
v0.13.1
v0.13.2
v0.14.0
v0.14.1
v0.15.0
v0.15.1
v0.2.0
v0.2.1
v0.3.0
v0.4.0
v0.4.1
v0.5.0
v0.5.1
v0.6.0
v0.7.0
v0.8.0
v0.9.0
v1.*
v1.0.0
v1.0.1
v1.0.2
v1.0.3
v1.0.4
v1.0.5
v1.0.6
v1.0.7
v1.0.8
v1.1.0
v1.1.1
v1.2.0
v1.2.1
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.5.5

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-104846.json"