Resource exhaustion in Serialize-javascript - CVE-2026-34043
Published: April 28, 2026
Vulnerability identifier: #VU128353
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-34043
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Yahoo
Affected software:
Serialize-javascript
Serialize-javascript
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in the serialize() function when serializing a specially crafted array-like object. A remote attacker can supply a crafted array-like object to cause a denial of service.
Exploitation can cause 100% CPU usage and the process may hang indefinitely.
How to mitigate CVE-2026-34043
Install security update from vendor's website.