{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-34226", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-26T16:22:29.033Z", "datePublished": "2026-03-27T21:17:24.777Z", "dateUpdated": "2026-07-15T01:04:37.919Z" }, "containers": { "cna": { "title": "Happy DOM's fetch credentials include uses page-origin cookies instead of target-origin cookies", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-201", "lang": "en", "description": "CWE-201: Insertion of Sensitive Information Into Sent Data", "type": "CWE" } ] }, { "descriptions": [ { "cweId": "CWE-359", "lang": "en", "description": "CWE-359: Exposure of Private Personal Information to an Unauthorized Actor", "type": "CWE" } ] } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1" } } ], "references": [ { "name": "https://github.com/capricorn86/happy-dom/security/advisories/GHSA-w4gp-fjgq-3q4g", "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/capricorn86/happy-dom/security/advisories/GHSA-w4gp-fjgq-3q4g" }, { "name": "https://github.com/capricorn86/happy-dom/pull/2117", "tags": [ "x_refsource_MISC" ], "url": "https://github.com/capricorn86/happy-dom/pull/2117" }, { "name": "https://github.com/capricorn86/happy-dom/commit/68324c21d7b98f53f7bb5a7b3e185bda7106e751", "tags": [ "x_refsource_MISC" ], "url": "https://github.com/capricorn86/happy-dom/commit/68324c21d7b98f53f7bb5a7b3e185bda7106e751" }, { "name": "https://github.com/capricorn86/happy-dom/blob/f8d8cad41e9722fab9eefb9dfb3cca696462e908/packages/happy-dom/src/fetch/utilities/FetchRequestHeaderUtility.ts", "tags": [ "x_refsource_MISC" ], "url": "https://github.com/capricorn86/happy-dom/blob/f8d8cad41e9722fab9eefb9dfb3cca696462e908/packages/happy-dom/src/fetch/utilities/FetchRequestHeaderUtility.ts" }, { "name": "https://github.com/capricorn86/happy-dom/releases/tag/v20.8.9", "tags": [ "x_refsource_MISC" ], "url": "https://github.com/capricorn86/happy-dom/releases/tag/v20.8.9" } ], "affected": [ { "vendor": "capricorn86", "product": "happy-dom", "versions": [ { "version": "< 20.8.9", "status": "affected" } ] } ], "providerMetadata": { "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-27T21:17:24.777Z" }, "descriptions": [ { "lang": "en", "value": "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." } ], "source": { "advisory": "GHSA-w4gp-fjgq-3q4g", "discovery": "UNKNOWN" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-03-31T14:25:16.015238Z", "id": "CVE-2026-34226", "options": [ { "Exploitation": "poc" }, { "Automatable": "yes" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-31T14:25:27.402Z" } }, { "affected": [ { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:ansible_automation_platform:2" ], "defaultStatus": "affected", "packageName": "ansible-automation-platform-26/gateway-rhel9", "product": "Red Hat Ansible Automation Platform 2", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:openshift:4" ], "defaultStatus": "unaffected", "packageName": "openshift4/ose-agent-installer-ui-rhel9", "product": "Red Hat OpenShift Container Platform 4", "vendor": "Red Hat" } ], "datePublic": "2026-03-27T21:17:24.777Z", "descriptions": [ { "lang": "en", "value": "A flaw was found in Happy DOM, a JavaScript implementation of a web browser without its graphical user interface. This vulnerability allows for information disclosure where cookies from the current page's origin can be inadvertently attached to network requests made to a different destination. This occurs when the `fetch` function is used with the `credentials: \"include\"` option, potentially leading to the leakage of sensitive user data to unintended recipients." } ], "metrics": [ { "other": { "content": { "namespace": "https://access.redhat.com/security/updates/classification/", "value": "Important" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1" }, "format": "CVSS" } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-201", "description": "Insertion of Sensitive Information Into Sent Data", "lang": "en", "type": "CWE" } ] } ], "references": [ { "tags": [ "vdb-entry", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/security/cve/CVE-2026-34226" }, { "name": "RHBZ#2452519", "tags": [ "issue-tracking", "x_refsource_REDHAT" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2452519" }, { "tags": [ "x_sadp-csaf-vex" ], "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34226.json" } ], "timeline": [ { "lang": "en", "time": "2026-03-27T22:02:34.704Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-03-27T21:17:24.777Z", "value": "Made public." } ], "title": "happy-dom: Happy DOM: Information disclosure via incorrect cookie handling in fetch requests", "x_adpType": "supplier", "x_generator": { "engine": "sadp-cli 1.0.0" }, "providerMetadata": { "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-07-15T01:04:37.919Z" } } ] } }