Seroval facilitates JavaScript value stringification, including complex structures beyond JSON.stringify capabilities. Prior to 1.6.8, fromJSON and fromCrossJSON do not validate a sequence node's done index. A crafted done index can create an iterator that never finishes when application code consumes it to completion. An unauthenticated request to a service that deserializes untrusted input can therefore block the event loop, exhaust process memory, or make the service unavailable. This issue is fixed in version 1.6.8.
History

Sat, 31 Oct 2026 02:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 27 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Tue, 27 Oct 2026 04:30:00 +0000

Type Values Removed Values Added
First Time appeared Lxsmnsyc
Lxsmnsyc seroval
Vendors & Products Lxsmnsyc
Lxsmnsyc seroval

Mon, 26 Oct 2026 21:00:00 +0000

Type Values Removed Values Added
Description Seroval facilitates JavaScript value stringification, including complex structures beyond JSON.stringify capabilities. Prior to 1.6.8, fromJSON and fromCrossJSON do not validate a sequence node's done index. A crafted done index can create an iterator that never finishes when application code consumes it to completion. An unauthenticated request to a service that deserializes untrusted input can therefore block the event loop, exhaust process memory, or make the service unavailable. This issue is fixed in version 1.6.8.
Title Seroval: fromJSON deserializer trusts sequence doneAt (unauthenticated event-loop DoS)
Weaknesses CWE-1284
CWE-835
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-10-26T20:41:52.905Z

Updated: 2026-10-31T01:49:33.208Z

Reserved: 2026-10-26T15:03:39.035Z

Link: CVE-2026-116581

cve-icon Vulnrichment

Updated: 2026-10-31T01:49:28.309Z

cve-icon NVD

Status : Deferred

Published: 2026-10-26T21:18:15.903

Modified: 2026-10-31T02:17:33.007

Link: CVE-2026-116581

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-26T20:41:52Z

Links: CVE-2026-116581 - Bugzilla