CVE-2026-34043
Serialize JavaScript has CPU Exhaustion Denial of Service via crafted array-like objects
CVSS Score
5.9
EPSS Score
0.0%
EPSS Percentile
11th
Serialize JavaScript to a superset of JSON that includes regular expressions and functions. Prior to version 7.0.5, there is a Denial of Service (DoS) vulnerability caused by CPU exhaustion. When serializing a specially crafted "array-like" object (an object that inherits from Array.prototype but has a very large length property), the process enters an intensive loop that consumes 100% CPU and hangs indefinitely. This issue has been patched in version 7.0.5.
| CWE | CWE-400 CWE-834 |
| Vendor | yahoo |
| Product | serialize-javascript |
| Published | Mar 31, 2026 |
| Last Updated | Mar 31, 2026 |
Stay Ahead of the Next One
Get instant alerts for yahoo serialize-javascript
Be the first to know when new medium vulnerabilities affecting yahoo serialize-javascript 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:H/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
yahoo / serialize-javascript
< 7.0.5