CVE catalog
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 i
- Severity
- High · CVSS 8.7
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.57% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | node-immutable | sid | 5.1.9-1 | fixed |
| Debian | node-immutable | forky | 5.1.9-1 | fixed |
| Debian | node-immutable | trixie | 4.3.4-1 | vulnerable |
| Debian | node-immutable | bookworm | 4.1.0-3 | vulnerable |
| Cpe | node-immutable | Not reported | Not reported | vulnerable |
| Cpe | immutable | Not reported | 4.3.9 | fixed |
| Cpe | immutable | Not reported | 5.1.8 | fixed |
| Npm | immutable | Not reported | 3.8.4 | fixed |
| Npm | immutable | Not reported | 5.1.8 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | node-immutable | source | sid | 4.3.9-1 | not yet assigned | Not reported | [1141821] |
| Debian | node-immutable | source | forky | 4.3.9-1 | not yet assigned | Not reported | [1141821] |
| Debian | node-immutable | source | trixie | (unfixed) | not yet assigned | Not reported | [1141821] |
| Debian | node-immutable | source | bookworm | (unfixed) | not yet assigned | Not reported | [1141821] |
| Cpe | immutable | cpe | Not reported | 4.3.9 | Not reported | Not reported | Not reported |
| Cpe | immutable | cpe | Not reported | 5.1.8 | Not reported | Not reported | Not reported |
| Npm | immutable | npm | Not reported | 3.8.4 | Not reported | GHSA-V56Q-MH7H-F735 | Not reported |
| Npm | immutable | npm | Not reported | 5.1.8 | Not reported | Not reported | Not reported |
Notes
[trixie] node-immutable: Minor issue [bookworm] node-immutable: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [node-immutable]Affected
Details (2)
4.1.0-3· all · bookwormAffected
nvd · node-immutable · debian · bookworm; nvd · node-immutable · debian · 12
4.1.0-3· all · bookwormAffected
nvd · node-immutable · debian · bookworm; nvd · node-immutable · debian · 12
[Debian 13 (Trixie)]
- [node-immutable]Affected
Details (2)
4.3.4-1· all · trixieAffected
nvd · node-immutable · debian · 13
4.3.4-1· all · trixieAffected
nvd · node-immutable · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/]
- [https://github.com/advisories/GHSA-v56q-mh7h-f735]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-59879]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-59879]
- [https://security-tracker.debian.org/tracker/CVE-2026-59879]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-59879.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2636.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]