High severity7.5OSV Advisory· Published Jul 8, 2026· Updated Jul 10, 2026
CVE-2026-59879
CVE-2026-59879
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
immutablenpm | < 4.3.9 | 4.3.9 |
immutablenpm | >= 5.0.0-beta.1, < 5.1.8 | 5.1.8 |
Affected products
18v5.1.7, v5.1.6, v4.3.8, …+ 1 more
- (no CPE)range: v5.1.7, v5.1.6, v4.3.8, …
- (no CPE)range: <4.3.9, <5.1.8
- osv-coords15 versionspkg:apk/chainguard/rancher-api-uipkg:apk/chainguard/arangodb-3.12pkg:apk/chainguard/authentik-2026.2pkg:apk/chainguard/authentik-2026.5pkg:apk/chainguard/authentik-fips-2026.5pkg:apk/chainguard/keep-uipkg:apk/chainguard/keep-ui-fipspkg:apk/chainguard/nextcloud-server-33pkg:apk/chainguard/vitess-23pkg:apk/chainguard/vitess-24pkg:apk/wolfi/nextcloud-server-33pkg:apk/wolfi/vitess-23pkg:apk/wolfi/vitess-24pkg:apk/chainguard/nextcloud-server-34pkg:apk/wolfi/rancher-api-ui
< 1.2.3-r9+ 14 more
- (no CPE)range: < 1.2.3-r9
- (no CPE)range: < 3.12.9.4-r26
- (no CPE)range: < 2026.2.6-r11
- (no CPE)range: < 2026.5.6-r4
- (no CPE)range: < 2026.5.6-r3
- (no CPE)range: < 0.54.2-r3
- (no CPE)range: < 0.54.2-r5
- (no CPE)range: < 33.0.7-r1
- (no CPE)range: < 23.0.5-r6
- (no CPE)range: < 24.0.2-r7
- (no CPE)range: < 33.0.7-r1
- (no CPE)range: < 23.0.5-r6
- (no CPE)range: < 24.0.2-r7
- (no CPE)range: < 34.0.2-r7
- (no CPE)range: < 1.2.3-r9
Patches
Vulnerability mechanics
References
7- github.com/immutable-js/immutable-js/commit/a1a1ee412dcaa380ab325196283d06594ffe4b84nvdPatchWEB
- github.com/immutable-js/immutable-js/commit/f0bc997d8eb9886aff2236635aa210a95a04304anvdPatchWEB
- github.com/immutable-js/immutable-js/security/advisories/GHSA-v56q-mh7h-f735nvdExploitMitigationVendor AdvisoryWEB
- github.com/advisories/GHSA-v56q-mh7h-f735ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-59879ghsaADVISORY
- github.com/immutable-js/immutable-js/releases/tag/v4.3.9nvdProductRelease NotesWEB
- github.com/immutable-js/immutable-js/releases/tag/v5.1.8nvdProductRelease NotesWEB
News mentions
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