CVE-2026-46625

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.9%, top 42% of all CVEs by exploit prediction. 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, secondary
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: 1.0%CVSS: 7.5Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

JavaScript Cookie is a JavaScript API for handling cookies, client-side. Prior to version 3.0.7, js-cookie's internal assign() helper copies properties with for...in + plain assignment. When the source object is produced by JSON.parse, the JSON object's "__proto__" member is an own enumerable property, so the for…in enumerates it and the target[key] = source[key] write triggers the Object.prototype.__proto__ setter on the fresh target ({}). The result is a per-instance prototype hijack: Object.prototype itself is untouched, but the merged attributes object now inherits attacker-controlled keys. Because the consuming set() function then enumerates the merged object with another for...in, every key the attacker placed on the polluted prototype lands in the resulting Set-Cookie string as an attribute pair. The attacker can set domain=, secure=, samesite=, expires=, and path= on cookies whose attributes the developer thought were locked down. This issue has been patched in version 3.0.7.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
65
EG Risk 65/100

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%
EPSS PROB
1.0%
EPSS %ILE
61st
KEV
Not listed

Published

May 21, 2026

Last Modified

September 9, 2026

Advisory Details (3)

Auto-updated Jun 11, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release, github.
github Patch Available🟡 PoC Available

Per-instance prototype hijack in assign() enables cookie-attribute injection · Advisory · js-cookie/js-cookie · GitHub

https://github.com/js-cookie/js-cookie/security/advisories/GHSA-qjx8-664m-686j
github_release Patch Available

v3.0.7

Patch available: js-cookie/js-cookie v3.0.7

https://github.com/js-cookie/js-cookie/releases/tag/v3.0.7
github_commit Patch Available

commit eb3c40e89731 (js-cookie/js-cookie)

Patch available: js-cookie/js-cookie v3.0.7 (contains commit eb3c40e89731)

https://github.com/js-cookie/js-cookie/commit/eb3c40e89731e99b8970faaf35ddad249c6c0020

Vendor Advisories for CVE-2026-46625(11)

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

Patch Availability(10)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrhoai/odh-mod-arch-model-registry-rhel9:17872506172026-08-27redhat
redhatansible-automation-platform-27/gateway-rhel9:17872184092026-08-24redhat
redhatansible-automation-platform/automation-portal:17870471882026-08-18redhat
redhatansible-automation-platform/automation-portal:17870471142026-08-18redhat
redhatrhdh/rhdh-hub-rhel9:17859728432026-08-10redhat
redhatrhdh/rhdh-hub-rhel9:17854116522026-08-03redhat
redhatcryostat/cryostat-grafana-dashboard-rhel9:4.2.0-132026-07-29redhat
redhatrhdh/red-hat-developer-hub-backstage-plugin-orchestrator-form-widgets:17853329282026-07-29redhat
redhatadvanced-cluster-security/rhacs-main-rhel8:17833571402026-07-08redhat
redhatopenshift-service-mesh/kiali-rhel9:17822014662026-06-29redhat

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-js-cookie2.2.1-1 ... 3.0.7+~3.0.6-2 (8 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
node-js-cookie3.0.1+~3.0.0-3, 3.0.7+~3.0.6-1, 3.0.7+~3.0.6-2, 3.0.8+~3.0.6-1
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
node-js-cookie3.0.1+~3.0.0-3, 3.0.7+~3.0.6-1, 3.0.7+~3.0.6-2, 3.0.8+~3.0.6-1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
node-js-cookie3.0.1+~3.0.0-3
  • every version up to 3.0.7+~3.0.6-1: fixed in 3.0.7+~3.0.6-1
—
npm(1)
PackageVulnerable rangeFix by version rangeDependents
js-cookie—
  • every version up to 3.0.7: fixed in 3.0.7
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 31× 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 214 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-46625?
CVE-2026-46625 is a high vulnerability published on May 21, 2026. JavaScript Cookie is a JavaScript API for handling cookies, client-side. Prior to version 3.0.7, js-cookie's internal assign() helper copies properties with for...in + plain assignment. When the source object is produced by JSON.parse, the JSON object's "proto" member is an own enumerable property,…
When was CVE-2026-46625 disclosed?
CVE-2026-46625 was first published on May 21, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46625 actively exploited?
CVE-2026-46625 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.0% probability of exploitation in the next 30 days (61st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-46625?
CVE-2026-46625 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-46625?
A fix for CVE-2026-46625 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-46625 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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