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CVE-2026-59879

Immutable.js `List` 32-bit trie overflow → unrecoverable DoS PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
immutable-js / immutable-jsaffected >= 5.0.0-beta.1, < 5.1.8; affected < 4.3.9

CWE

CWE-190, CWE-400, CWE-835, CWE-1284

References

ADP enrichment

CISA-ADP

No English description supplied.