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2 vulnerabilities found for js-cookie by js-cookie
CVE-2026-46625 (GCVE-0-2026-46625)
Vulnerability from nvd – Published: 2026-06-10 21:18 – Updated: 2026-08-13 12:04
VLAI
EPSS
VEX
Title
JavaScript Cookie: Per-instance prototype hijack in assign() enables cookie-attribute injection
Summary
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.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-11 14:46 UTC
CWE
Assigner
References
12 references
| URL | Tags |
|---|---|
| https://github.com/js-cookie/js-cookie/security/a… | x_refsource_CONFIRM |
| https://github.com/js-cookie/js-cookie/commit/eb3… | x_refsource_MISC |
| https://github.com/js-cookie/js-cookie/releases/t… | x_refsource_MISC |
| https://access.redhat.com/security/cve/CVE-2026-46625 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2487740 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:48151 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:36625 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:48126 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:49642 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:52768 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:33183 | vendor-advisoryx_refsource_REDHAT |
Impacted products
23 products
| Vendor | Product | Version | |
|---|---|---|---|
| js-cookie | js-cookie |
Affected:
< 3.0.7
|
|
| Red Hat | Cryostat 4 on RHEL 9 |
Unaffected:
4.2.0-13 , < *
(rpm)
cpe:/a:redhat:cryostat:4::el9 |
|
| Red Hat | Red Hat Advanced Cluster Security for Kubernetes 4.10 |
Unaffected:
1783357140 , < *
(rpm)
cpe:/a:redhat:advanced_cluster_security:4.10::el8 |
|
| Red Hat | Red Hat Developer Hub 1.10 |
Unaffected:
1785333413 , < *
(rpm)
cpe:/a:redhat:rhdh:1.10::el9 |
|
| Red Hat | Red Hat Developer Hub 1.10 |
Unaffected:
1785340831 , < *
(rpm)
cpe:/a:redhat:rhdh:1.10::el9 |
|
| Red Hat | Red Hat Developer Hub 1.10 |
Unaffected:
1785332928 , < *
(rpm)
cpe:/a:redhat:rhdh:1.10::el9 |
|
| Red Hat | Red Hat Developer Hub 1.10 |
Unaffected:
1785411652 , < *
(rpm)
cpe:/a:redhat:rhdh:1.10::el9 |
|
| Red Hat | Red Hat Developer Hub 1.9 |
Unaffected:
1785972843 , < *
(rpm)
cpe:/a:redhat:rhdh:1.9::el9 |
|
| Red Hat | Red Hat OpenShift Service Mesh 3.3 |
Unaffected:
1782231869 , < *
(rpm)
cpe:/a:redhat:service_mesh:3.3::el9 |
|
| Red Hat | Red Hat OpenShift Service Mesh 3.3 |
Unaffected:
1782201466 , < *
(rpm)
cpe:/a:redhat:service_mesh:3.3::el9 |
|
| Red Hat | OpenShift Lightspeed |
cpe:/a:redhat:openshift_lightspeed |
|
| Red Hat | Red Hat 3scale API Management Platform 2 |
cpe:/a:redhat:red_hat_3scale_amp:2 |
|
| Red Hat | Red Hat Ansible Automation Platform 2 |
cpe:/a:redhat:ansible_automation_platform:2 |
|
| Red Hat | Red Hat Discovery 2 |
cpe:/a:redhat:discovery:2::el9 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 |
cpe:/a:redhat:jboss_enterprise_application_platform:7 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8 |
cpe:/a:redhat:jboss_enterprise_application_platform:8 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack |
cpe:/a:redhat:jbosseapxp |
|
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
|
| Red Hat | Self-service automation portal 2 |
cpe:/a:redhat:ansible_portal:2 |
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CVE-2026-46625 (GCVE-0-2026-46625)
Vulnerability from cvelistv5 – Published: 2026-06-10 21:18 – Updated: 2026-08-13 12:04
VLAI
EPSS
VEX
Title
JavaScript Cookie: Per-instance prototype hijack in assign() enables cookie-attribute injection
Summary
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.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-11 14:46 UTC
CWE
Assigner
References
12 references
| URL | Tags |
|---|---|
| https://github.com/js-cookie/js-cookie/security/a… | x_refsource_CONFIRM |
| https://github.com/js-cookie/js-cookie/commit/eb3… | x_refsource_MISC |
| https://github.com/js-cookie/js-cookie/releases/t… | x_refsource_MISC |
| https://access.redhat.com/security/cve/CVE-2026-46625 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2487740 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:48151 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:36625 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:48126 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:49642 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:52768 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:33183 | vendor-advisoryx_refsource_REDHAT |
Impacted products
23 products
| Vendor | Product | Version | |
|---|---|---|---|
| js-cookie | js-cookie |
Affected:
< 3.0.7
|
|
| Red Hat | Cryostat 4 on RHEL 9 |
Unaffected:
4.2.0-13 , < *
(rpm)
cpe:/a:redhat:cryostat:4::el9 |
|
| Red Hat | Red Hat Advanced Cluster Security for Kubernetes 4.10 |
Unaffected:
1783357140 , < *
(rpm)
cpe:/a:redhat:advanced_cluster_security:4.10::el8 |
|
| Red Hat | Red Hat Developer Hub 1.10 |
Unaffected:
1785333413 , < *
(rpm)
cpe:/a:redhat:rhdh:1.10::el9 |
|
| Red Hat | Red Hat Developer Hub 1.10 |
Unaffected:
1785340831 , < *
(rpm)
cpe:/a:redhat:rhdh:1.10::el9 |
|
| Red Hat | Red Hat Developer Hub 1.10 |
Unaffected:
1785332928 , < *
(rpm)
cpe:/a:redhat:rhdh:1.10::el9 |
|
| Red Hat | Red Hat Developer Hub 1.10 |
Unaffected:
1785411652 , < *
(rpm)
cpe:/a:redhat:rhdh:1.10::el9 |
|
| Red Hat | Red Hat Developer Hub 1.9 |
Unaffected:
1785972843 , < *
(rpm)
cpe:/a:redhat:rhdh:1.9::el9 |
|
| Red Hat | Red Hat OpenShift Service Mesh 3.3 |
Unaffected:
1782231869 , < *
(rpm)
cpe:/a:redhat:service_mesh:3.3::el9 |
|
| Red Hat | Red Hat OpenShift Service Mesh 3.3 |
Unaffected:
1782201466 , < *
(rpm)
cpe:/a:redhat:service_mesh:3.3::el9 |
|
| Red Hat | OpenShift Lightspeed |
cpe:/a:redhat:openshift_lightspeed |
|
| Red Hat | Red Hat 3scale API Management Platform 2 |
cpe:/a:redhat:red_hat_3scale_amp:2 |
|
| Red Hat | Red Hat Ansible Automation Platform 2 |
cpe:/a:redhat:ansible_automation_platform:2 |
|
| Red Hat | Red Hat Discovery 2 |
cpe:/a:redhat:discovery:2::el9 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 |
cpe:/a:redhat:jboss_enterprise_application_platform:7 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8 |
cpe:/a:redhat:jboss_enterprise_application_platform:8 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack |
cpe:/a:redhat:jbosseapxp |
|
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
|
| Red Hat | Self-service automation portal 2 |
cpe:/a:redhat:ansible_portal:2 |
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