CVE-2026-116584
Seroval `fromJSON`/`fromCrossJSON` denial of service via unvalidated array node length
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-770 |
| Vendor | lxsmnsyc |
| Product | seroval |
| Published | Oct 26, 2026 |
Stay Ahead of the Next One
Get instant alerts for lxsmnsyc seroval
Be the first to know when new high vulnerabilities affecting lxsmnsyc seroval are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
lxsmnsyc / seroval
>= 1.4.1, < 1.6.8