8.7High
CVE-2026-59879Immutable.js `List` 32-bit trie overflow → unrecoverable DoS
Description
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.
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| immutable-js | immutable | < 4.3.9 | |
| immutable-js | immutable-js | >= 5.0.0-beta.1, < 5.1.8, < 4.3.9 |
References and patches
- https://github.com/immutable-js/immutable-js/security/advisories/GHSA-v56q-mh7h-f735 ExploitMitigationVendor Advisory
- https://github.com/immutable-js/immutable-js/commit/a1a1ee412dcaa380ab325196283d06594ffe4b84 Patch
- https://github.com/immutable-js/immutable-js/commit/f0bc997d8eb9886aff2236635aa210a95a04304a Patch
- https://github.com/immutable-js/immutable-js/releases/tag/v4.3.9 ProductRelease Notes
- https://github.com/immutable-js/immutable-js/releases/tag/v5.1.8 ProductRelease Notes
CPE matches (NVD) (2)
cpe:2.3:a:immutable-js:immutable:*:*:*:*:*:node.js:*:*< 4.3.9cpe:2.3:a:immutable-js:immutable:*:*:*:*:*:node.js:*:*≥ 5.0.0 < 5.1.8