Description
Seroval facilitates JavaScript value stringification, including complex structures beyond JSON.stringify capabilities. From 1.4.1 until 1.6.8, fromJSON and fromCrossJSON do not require an array node's element list to be an actual array. A small crafted payload can supply an attacker-controlled length that determines memory allocation and decoder iterations independently of payload size, allowing an unauthenticated request to exhaust the process or block its thread. This issue is a residual bypass of the remediation for CVE-2026-23957. This issue is fixed in version 1.6.8.
Published: 2026-10-26
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

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

Type Values Removed Values Added
Weaknesses CWE-130
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. From 1.4.1 until 1.6.8, fromJSON and fromCrossJSON do not require an array node's element list to be an actual array. A small crafted payload can supply an attacker-controlled length that determines memory allocation and decoder iterations independently of payload size, allowing an unauthenticated request to exhaust the process or block its thread. This issue is a residual bypass of the remediation for CVE-2026-23957. This issue is fixed in version 1.6.8.
Title Seroval `fromJSON`/`fromCrossJSON` denial of service via unvalidated array node length
Weaknesses CWE-770
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'}


Subscriptions

Lxsmnsyc Seroval
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-26T20:52:38.339Z

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

Link: CVE-2026-116584

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-26T21:18:17.053

Modified: 2026-10-26T21:18:17.373

Link: CVE-2026-116584

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-26T20:52:38Z

Links: CVE-2026-116584 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-27T13:45:02Z

Weaknesses
  • CWE-130

    Improper Handling of Length Parameter Inconsistency

  • CWE-770

    Allocation of Resources Without Limits or Throttling