CVE-2026-59879

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.7% (49th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 7.5Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

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
EG Score
7.5HIGHmedium confidence
EG Risk
65
EG Risk 65/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.7%
EPSS %ILE
50th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 8, 2026

Last Modified

July 10, 2026

Advisory Details (5)

Auto-updated Jul 8, 2026
Patch available. Sources: github_commit, github_release, github.
githubMentions a patch (unverified)

Immutable.js `List` 32-bit trie overflow → unrecoverable DoS · Advisory · immutable-js/immutable-js · GitHub

https://github.com/immutable-js/immutable-js/security/advisories/GHSA-v56q-mh7h-f735
github_release Patch Available

v5.1.8

Patch available: immutable-js/immutable-js v5.1.8

https://github.com/immutable-js/immutable-js/releases/tag/v5.1.8
github_release Patch Available

v4.3.9

Patch available: immutable-js/immutable-js v4.3.9

https://github.com/immutable-js/immutable-js/releases/tag/v4.3.9
github_commit Patch Available

commit f0bc997d8eb9 (immutable-js/immutable-js)

Patch available: immutable-js/immutable-js v4.3.9 (contains commit f0bc997d8eb9)

https://github.com/immutable-js/immutable-js/commit/f0bc997d8eb9886aff2236635aa210a95a04304a
github_commit Patch Available

commit a1a1ee412dca (immutable-js/immutable-js)

Patch available: immutable-js/immutable-js v5.1.8 (contains commit a1a1ee412dca)

https://github.com/immutable-js/immutable-js/commit/a1a1ee412dcaa380ab325196283d06594ffe4b84

Vendor Advisories for CVE-2026-59879(19)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(12)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatmulticluster-engine/console-mce-rhel9:17895838872026-09-28redhat
redhatansible-automation-platform/automation-portal:17902549632026-09-28redhat
redhatmulticluster-engine/console-mce-rhel9:17901176832026-09-28redhat
redhatmulticluster-engine/console-mce-rhel9:17901213102026-09-28redhat
redhatdiscovery/discovery-ui-rhel9:17896774592026-09-21redhat
redhatquay/quay-rhel9:17895637532026-09-21redhat
redhatopenshift-service-mesh/kiali-rhel9:17890221732026-09-17redhat
redhatsatellite/iop-vulnerability-frontend-rhel9:17896609692026-09-17redhat
redhatopenshift-service-mesh/kiali-rhel9:17890248272026-09-17redhat
redhatopenshift-service-mesh/kiali-rhel9:17890845852026-09-17redhat
redhatsatellite/iop-host-inventory-frontend-rhel9:17896131072026-09-17redhat
redhatrhacm2/console-rhel9:17885636152026-09-15redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
node-immutable3.8.2+dfsg-3 ... 4.3.8-2 (11 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
node-immutable4.1.0-3, 4.3.4-1, 4.3.8-1, 4.3.8-2, 4.3.9-1
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
node-immutable4.3.4-1, 4.3.8-1, 4.3.8-2, 4.3.9-1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
node-immutable4.3.4-1, 4.3.8-1, 4.3.8-2
  • every version up to 4.3.9-1: fixed in 4.3.9-1
—
npm(1)
PackageVulnerable rangeFix by version rangeDependents
immutable—
  • 4.0.0-rc.1 up to 4.3.9: fixed in 4.3.9
  • 5.0.0-beta.1 up to 5.1.8: fixed in 5.1.8
  • every version up to 3.8.4: fixed in 3.8.4
—

Weakness Classification(4)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 36× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 145 total refreshes for this CVE.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:13 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
  4. 2026-10-06 15:18 UTCEPSS rescore
  5. 2026-10-05 17:43 UTCEPSS rescore
  6. 2026-10-04 23:22 UTCEPSS rescore
  7. 2026-10-03 14:26 UTCEPSS rescore
  8. 2026-10-02 17:56 UTCEPSS rescore
  9. 2026-10-01 19:50 UTCEPSS rescore
  10. 2026-10-01 16:12 UTCEG score recompute
  11. 2026-10-01 16:12 UTCVendor advisory
  12. 2026-09-30 15:03 UTCEPSS rescore
  13. 2026-09-29 15:22 UTCEPSS rescore
  14. 2026-09-28 13:51 UTCEPSS rescore
  15. 2026-09-28 13:23 UTCEG score recompute
  16. 2026-09-28 13:23 UTCVendor advisory
  17. 2026-09-27 13:48 UTCEPSS rescore
  18. 2026-09-26 15:59 UTCEPSS rescore
  19. 2026-09-24 14:04 UTCEPSS rescore
  20. 2026-09-24 11:48 UTCEG score recompute
  21. 2026-09-24 11:48 UTCVendor advisory
  22. 2026-09-23 17:54 UTCEPSS rescore
  23. 2026-09-23 06:11 UTCEG score recompute
  24. 2026-09-23 06:11 UTCVendor advisory
  25. 2026-09-20 20:16 UTCEPSS rescore
Show 75 more
  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 05:44 UTCEG score recompute
  3. 2026-09-17 19:31 UTCEPSS rescore
  4. 2026-09-16 14:08 UTCEPSS rescore
  5. 2026-09-16 05:15 UTCEPSS rescore
  6. 2026-09-15 03:11 UTCEPSS rescore
  7. 2026-09-13 23:49 UTCEG score recompute
  8. 2026-09-13 16:47 UTCEPSS rescore
  9. 2026-09-12 15:46 UTCEG score recompute
  10. 2026-09-12 03:35 UTCEG score recompute
  11. 2026-09-11 14:53 UTCEPSS rescore
  12. 2026-09-10 09:35 UTCEPSS rescore
  13. 2026-09-08 22:01 UTCEPSS rescore
  14. 2026-09-07 16:01 UTCEPSS rescore
  15. 2026-09-06 14:03 UTCEG score recompute
  16. 2026-09-06 13:47 UTCEPSS rescore
  17. 2026-09-05 22:48 UTCEG score recompute
  18. 2026-09-04 05:07 UTCEPSS rescore
  19. 2026-09-02 14:12 UTCEPSS rescore
  20. 2026-09-01 13:54 UTCEPSS rescore
  21. 2026-09-01 04:40 UTCEPSS rescore
  22. 2026-08-30 19:47 UTCEG score recompute
  23. 2026-08-30 19:17 UTCEPSS rescore
  24. 2026-08-30 07:34 UTCEG score recompute
  25. 2026-08-30 01:22 UTCEPSS rescore
  26. 2026-08-28 21:42 UTCEPSS rescore
  27. 2026-08-27 21:50 UTCEG score recompute
  28. 2026-08-27 14:25 UTCEPSS rescore
  29. 2026-08-27 01:29 UTCEG score recompute
  30. 2026-08-26 14:46 UTCEPSS rescore
  31. 2026-08-26 08:24 UTCEG score recompute
  32. 2026-08-25 13:49 UTCEPSS rescore
  33. 2026-08-24 20:33 UTCEG score recompute
  34. 2026-08-23 05:56 UTCEG score recompute
  35. 2026-08-23 00:19 UTCEPSS rescore
  36. 2026-08-22 04:57 UTCEG score recompute
  37. 2026-08-21 23:49 UTCEPSS rescore
  38. 2026-08-21 03:59 UTCEG score recompute
  39. 2026-08-20 22:55 UTCEPSS rescore
  40. 2026-08-20 01:59 UTCEG score recompute
  41. 2026-08-19 17:04 UTCEPSS rescore
  42. 2026-08-18 22:59 UTCEG score recompute
  43. 2026-08-18 13:48 UTCEPSS rescore
  44. 2026-08-17 22:29 UTCEG score recompute
  45. 2026-08-17 13:47 UTCEPSS rescore
  46. 2026-08-16 20:16 UTCEG score recompute
  47. 2026-08-16 14:56 UTCEPSS rescore
  48. 2026-08-16 08:06 UTCEG score recompute
  49. 2026-08-16 02:14 UTCEPSS rescore
  50. 2026-08-15 07:47 UTCEG score recompute
  51. 2026-08-15 01:30 UTCEPSS rescore
  52. 2026-08-14 06:51 UTCEG score recompute
  53. 2026-08-13 22:00 UTCEPSS rescore
  54. 2026-08-12 18:22 UTCEG score recompute
  55. 2026-08-12 13:51 UTCEPSS rescore
  56. 2026-08-11 17:53 UTCEG score recompute
  57. 2026-08-11 05:43 UTCEG score recompute
  58. 2026-08-11 00:00 UTCEPSS rescore
  59. 2026-08-09 17:15 UTCEG score recompute
  60. 2026-08-09 13:46 UTCEPSS rescore
  61. 2026-08-08 16:57 UTCEG score recompute
  62. 2026-08-08 16:37 UTCEPSS rescore
  63. 2026-08-07 16:38 UTCEG score recompute
  64. 2026-08-06 16:18 UTCEG score recompute
  65. 2026-08-06 13:47 UTCEPSS rescore
  66. 2026-08-06 04:09 UTCEG score recompute
  67. 2026-08-05 19:17 UTCEPSS rescore
  68. 2026-08-04 15:40 UTCEG score recompute
  69. 2026-08-04 15:10 UTCEPSS rescore
  70. 2026-08-04 10:39 UTCEPSS rescore
  71. 2026-08-03 15:21 UTCEG score recompute
  72. 2026-08-03 10:36 UTCEPSS rescore
  73. 2026-08-02 02:52 UTCEG score recompute
  74. 2026-08-02 02:27 UTCEPSS rescore
  75. 2026-08-01 14:42 UTCEG score recompute

Related CVEs(same product + same vendor + same CWE)

Same product

2 shown

Debian:11:node-immutable

Frequently asked(5)

What is CVE-2026-59879?
CVE-2026-59879 is a high vulnerability published on July 8, 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…
When was CVE-2026-59879 disclosed?
CVE-2026-59879 was first published on July 8, 2026, with the most recent update on July 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59879 actively exploited?
CVE-2026-59879 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (50th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-59879?
CVE-2026-59879 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-59879?
A fix for CVE-2026-59879 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-59879 are linked in the Vendor Advisories panel on this page.

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