CVE-2026-59879

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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	Product Release Notes
https://github.com/immutable-js/immutable-js/releases/tag/v5.1.8	Product Release Notes
https://github.com/immutable-js/immutable-js/security/advisories/GHSA-v56q-mh7h-f735	Exploit Mitigation Vendor Advisory
https://github.com/immutable-js/immutable-js/security/advisories/GHSA-v56q-mh7h-f735	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:immutable-js:immutable::::::node.js::*
	cpe:2.3:a:immutable-js:immutable::::::node.js::*

History

No history.

Information

Published : 2026-07-08 17:17

Updated : 2026-07-10 18:48

NVD link : CVE-2026-59879

Mitre link : CVE-2026-59879

CVE.ORG link : CVE-2026-59879

JSON object : View

Products Affected

immutable-js

immutable

CWE

CWE-190

Integer Overflow or Wraparound

CWE-400

Uncontrolled Resource Consumption

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

CWE-1284

Improper Validation of Specified Quantity in Input

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