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4 vulnerabilities found for happy_dom by capricorn86
CVE-2026-34226 (GCVE-0-2026-34226)
Vulnerability from nvd – Published: 2026-03-27 21:17 – Updated: 2026-06-30 12:09
VLAI
EPSS
VEX
Title
Happy DOM's fetch credentials include uses page-origin cookies instead of target-origin cookies
Summary
Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Versions prior to 20.8.9 may attach cookies from the current page origin (`window.location`) instead of the request target URL when `fetch(..., { credentials: "include" })` is used. This can leak cookies from origin A to destination B. Version 20.8.9 fixes the issue.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://github.com/capricorn86/happy-dom/security… | x_refsource_CONFIRM |
| https://github.com/capricorn86/happy-dom/pull/2117 | x_refsource_MISC |
| https://github.com/capricorn86/happy-dom/commit/6… | x_refsource_MISC |
| https://github.com/capricorn86/happy-dom/blob/f8d… | x_refsource_MISC |
| https://github.com/capricorn86/happy-dom/releases… | x_refsource_MISC |
| https://access.redhat.com/security/cve/CVE-2026-34226 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2452519 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| capricorn86 | happy-dom |
Affected:
< 20.8.9
|
|
| Red Hat | Red Hat Ansible Automation Platform 2 |
cpe:/a:redhat:ansible_automation_platform:2 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
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CVE-2026-33943 (GCVE-0-2026-33943)
Vulnerability from nvd – Published: 2026-03-27 21:15 – Updated: 2026-06-30 12:09
VLAI
EPSS
VEX
Title
Happy DOM ECMAScriptModuleCompiler: unsanitized export names are interpolated as executable code
Summary
Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. In versions 15.10.0 through 20.8.7, a code injection vulnerability in `ECMAScriptModuleCompiler` allows an attacker to achieve Remote Code Execution (RCE) by injecting arbitrary JavaScript expressions inside `export { }` declarations in ES module scripts processed by happy-dom. The compiler directly interpolates unsanitized content into generated code as an executable expression, and the quote filter does not strip backticks, allowing template literal-based payloads to bypass sanitization. Version 20.8.8 fixes the issue.
Severity
8.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/capricorn86/happy-dom/security… | x_refsource_CONFIRM |
| https://github.com/capricorn86/happy-dom/commit/5… | x_refsource_MISC |
| https://github.com/capricorn86/happy-dom/releases… | x_refsource_MISC |
| https://access.redhat.com/security/cve/CVE-2026-33943 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2452522 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| capricorn86 | happy-dom |
Affected:
>= 15.10.0, < 20.8.8
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
|
| Red Hat | Red Hat Ansible Automation Platform 2 |
cpe:/a:redhat:ansible_automation_platform:2 |
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CVE-2026-34226 (GCVE-0-2026-34226)
Vulnerability from cvelistv5 – Published: 2026-03-27 21:17 – Updated: 2026-06-30 12:09
VLAI
EPSS
VEX
Title
Happy DOM's fetch credentials include uses page-origin cookies instead of target-origin cookies
Summary
Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. Versions prior to 20.8.9 may attach cookies from the current page origin (`window.location`) instead of the request target URL when `fetch(..., { credentials: "include" })` is used. This can leak cookies from origin A to destination B. Version 20.8.9 fixes the issue.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://github.com/capricorn86/happy-dom/security… | x_refsource_CONFIRM |
| https://github.com/capricorn86/happy-dom/pull/2117 | x_refsource_MISC |
| https://github.com/capricorn86/happy-dom/commit/6… | x_refsource_MISC |
| https://github.com/capricorn86/happy-dom/blob/f8d… | x_refsource_MISC |
| https://github.com/capricorn86/happy-dom/releases… | x_refsource_MISC |
| https://access.redhat.com/security/cve/CVE-2026-34226 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2452519 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| capricorn86 | happy-dom |
Affected:
< 20.8.9
|
|
| Red Hat | Red Hat Ansible Automation Platform 2 |
cpe:/a:redhat:ansible_automation_platform:2 |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
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CVE-2026-33943 (GCVE-0-2026-33943)
Vulnerability from cvelistv5 – Published: 2026-03-27 21:15 – Updated: 2026-06-30 12:09
VLAI
EPSS
VEX
Title
Happy DOM ECMAScriptModuleCompiler: unsanitized export names are interpolated as executable code
Summary
Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. In versions 15.10.0 through 20.8.7, a code injection vulnerability in `ECMAScriptModuleCompiler` allows an attacker to achieve Remote Code Execution (RCE) by injecting arbitrary JavaScript expressions inside `export { }` declarations in ES module scripts processed by happy-dom. The compiler directly interpolates unsanitized content into generated code as an executable expression, and the quote filter does not strip backticks, allowing template literal-based payloads to bypass sanitization. Version 20.8.8 fixes the issue.
Severity
8.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/capricorn86/happy-dom/security… | x_refsource_CONFIRM |
| https://github.com/capricorn86/happy-dom/commit/5… | x_refsource_MISC |
| https://github.com/capricorn86/happy-dom/releases… | x_refsource_MISC |
| https://access.redhat.com/security/cve/CVE-2026-33943 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2452522 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| capricorn86 | happy-dom |
Affected:
>= 15.10.0, < 20.8.8
|
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
|
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cpe:/a:redhat:ansible_automation_platform:2 |
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