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CVE-2026-46625

HIGH(7.5)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Risk Signal Score19/100 — NIEDRIG
  • CVSS 7.5 — Hoch

Erwähnungen (letzte 60 Tage)

Artikel

EPSS-Score

0.9%

Exploit-Wahrscheinlichkeit (30 Tage)

CVSS Score

7.5

Technische Schwere

Beschreibung

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.

Betroffene Produkte

  • cpe:2.3:a:js-cookie:javascript_cookie:*:*:*:*:*:node.js:*:*
  • cpe:2.3:a:redhat:3scale_api_management:2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:ansible_automation_platform:2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_ai:-:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openshift_lightspeed:-:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*

GitHub Advisories

GHSA-qjx8-664m-686jHIGH

JavaScript Cookie: Per-instance prototype hijack in assign() enables cookie-attribute injection

npm/js-cookie→ 3.0.7
GitHub Advisory

Referenzen