CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2026-34043
High (7.5) in yahoo serialize. EPSS 0.5% chance of exploitation in the next 30 days. Fixed in serialize-javascript 7.0.5.
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.
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-400, CWE-834
- Published
- Modified
- Record from
- the NVD, synced
Affected
- yahoo:serialize
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-qj8w-gfj5-8c6v | npm | serialize-javascript | >=5.0.0 <7.0.5 | 7.0.5 |