{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-104979",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-02T18:16:13.629Z",
        "datePublished": "2026-10-05T17:49:53.030Z",
        "dateUpdated": "2026-10-05T19:12:00.312Z"
    },
    "containers": {
        "cna": {
            "title": "Plane: Cross-tenant stored XSS in intake enables account takeover",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-79",
                            "lang": "en",
                            "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-862",
                            "lang": "en",
                            "description": "CWE-862: Missing Authorization",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 8.7,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "LOW",
                        "scope": "CHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/makeplane/plane/security/advisories/GHSA-hh2r-3hwp-mvq3",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/makeplane/plane/security/advisories/GHSA-hh2r-3hwp-mvq3"
                },
                {
                    "name": "https://github.com/makeplane/plane/pull/9287",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/makeplane/plane/pull/9287"
                },
                {
                    "name": "https://github.com/makeplane/plane/commit/0d58adb69d859fc94c43b9d68fadd77e810d5ed1",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/makeplane/plane/commit/0d58adb69d859fc94c43b9d68fadd77e810d5ed1"
                },
                {
                    "name": "https://github.com/makeplane/plane/releases/tag/v1.4.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/makeplane/plane/releases/tag/v1.4.0"
                }
            ],
            "affected": [
                {
                    "vendor": "makeplane",
                    "product": "plane",
                    "versions": [
                        {
                            "version": "< 1.4.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-05T17:49:53.030Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Plane is an open-source project management tool. Prior to 1.4.0, IntakeIssuePublicViewSet.create in Plane v1.3.1 writes description_html through Issue.objects.create(...) without calling validate_html_content from nh3. Any authenticated user, including a new user with no workspace memberships, can plant arbitrary HTML in a project that has a published DeployBoard with intake enabled. When a project member or viewer of a closed intake item clicks the planted link, the TipTap \\tjavascript: parser bypass and the target=\"_self\" click handler execute JavaScript in the viewer's session and exfiltrate a long-lived API token. This issue is fixed in 1.4.0."
                }
            ],
            "source": {
                "advisory": "GHSA-hh2r-3hwp-mvq3",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/makeplane/plane/security/advisories/GHSA-hh2r-3hwp-mvq3",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-05T19:11:49.930509Z",
                                "id": "CVE-2026-104979",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "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": "2026-10-05T19:12:00.312Z"
                }
            }
        ]
    }
}