Integer overflow in Immutable.js - #VU135792
Published: June 29, 2026
Vulnerability identifier: #VU135792
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Immutable.js
Affected software:
Immutable.js
Immutable.js
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to integer overflow in List#set, List#setIn, List#updateIn, List#setSize, and the related functional set, setIn, and updateIn operations when processing a crafted index, size, or key-path segment in the range [2 ** 30, 2 ** 31). A remote attacker can send a specially crafted request to cause a denial of service.
A single small unauthenticated request can trigger an uncatchable infinite loop on an empty List or unbounded allocation leading to process abort on a populated List.
Remediation
Install security update from vendor's website.