Immutable.js provides many Persistent Immutable data structures. Prior to 4.3.9 and 5.1.8, List#set, List#setSize, List#setIn, List#updateIn, and the functional set, setIn, and updateIn mishandle an index or size in the range 2 ** 30 to 2 ** 31 in setListBounds in src/List.js, causing an empty List to enter an uncatchable infinite loop, a populated List to allocate without bound until process abort, or setSize to silently wrap large values. This issue is fixed in versions 4.3.9 and 5.1.8.
{
"cwe_ids": [
"CWE-1284",
"CWE-190",
"CWE-400",
"CWE-835"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59879.json",
"cna_assigner": "GitHub_M"
}{
"cpe": "cpe:2.3:a:immutable-js:immutable:*:*:*:*:*:node.js:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "4.3.9"
},
{
"introduced": "5.0.0"
},
{
"fixed": "5.1.8"
}
],
"source": [
"CPE_RANGE",
"REFERENCES"
]
}