{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-52843",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-08T18:41:27.724Z",
        "datePublished": "2026-07-15T16:16:07.762Z",
        "dateUpdated": "2026-07-15T17:37:26.880Z"
    },
    "containers": {
        "cna": {
            "title": "Lightpanda: fetch() and XMLHttpRequest attach session cookies to cross-origin requests regardless of credentials mode",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-346",
                            "lang": "en",
                            "description": "CWE-346: Origin Validation Error",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 9.3,
                        "baseSeverity": "CRITICAL",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "CHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/lightpanda-io/browser/security/advisories/GHSA-36mm-v3c2-24cc",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/lightpanda-io/browser/security/advisories/GHSA-36mm-v3c2-24cc"
                },
                {
                    "name": "https://github.com/lightpanda-io/browser/pull/2155",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/lightpanda-io/browser/pull/2155"
                },
                {
                    "name": "https://github.com/lightpanda-io/browser/commit/2cdaac780bed65db98bbb6ed2ad5bc6011863c76",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/lightpanda-io/browser/commit/2cdaac780bed65db98bbb6ed2ad5bc6011863c76"
                },
                {
                    "name": "https://github.com/lightpanda-io/browser/releases/tag/0.2.9",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/lightpanda-io/browser/releases/tag/0.2.9"
                }
            ],
            "affected": [
                {
                    "vendor": "lightpanda-io",
                    "product": "browser",
                    "versions": [
                        {
                            "version": "< 0.2.9",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-07-15T16:16:07.762Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Lightpanda is a headless browser designed for AI and automation. Prior to 0.2.9, Lightpanda fetch() and XMLHttpRequest unconditionally attached session cookies to every HTTP request, ignoring credentials: omit, credentials: same-origin, credentials: include, and XMLHttpRequest.withCredentials, allowing an attacker-controlled origin in a Lightpanda session to issue authenticated cross-origin requests against a victim origin. This issue is fixed in version 0.2.9."
                }
            ],
            "source": {
                "advisory": "GHSA-36mm-v3c2-24cc",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-07-15T17:37:05.863200Z",
                                "id": "CVE-2026-52843",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-07-15T17:37:26.880Z"
                }
            }
        ]
    }
}