{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-71555",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-08-06T21:24:15.376Z",
        "datePublished": "2026-08-06T21:51:55.890Z",
        "dateUpdated": "2026-08-07T17:26:58.575Z"
    },
    "containers": {
        "cna": {
            "title": "PILOS: Reverse tabnabbing in room description",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-1022",
                            "lang": "en",
                            "description": "CWE-1022: Use of Web Link to Untrusted Target with window.opener Access",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 4.1,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "LOW",
                        "scope": "CHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/THM-Health/PILOS/security/advisories/GHSA-j4wr-p8gh-xrw5",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/THM-Health/PILOS/security/advisories/GHSA-j4wr-p8gh-xrw5"
                },
                {
                    "name": "https://github.com/THM-Health/PILOS/commit/b50f2bd07c4f4a7d6a9981578238ae3579275d81",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/THM-Health/PILOS/commit/b50f2bd07c4f4a7d6a9981578238ae3579275d81"
                },
                {
                    "name": "https://github.com/THM-Health/PILOS/releases/tag/v4.14.1",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/THM-Health/PILOS/releases/tag/v4.14.1"
                }
            ],
            "affected": [
                {
                    "vendor": "THM-Health",
                    "product": "PILOS",
                    "versions": [
                        {
                            "version": ">= 2.1.0, < 4.14.1",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-06T21:51:55.890Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "PILOS (Platform for Interactive Live-Online Seminars) is a frontend for BigBlueButton. From 2.1.0 until 4.14.1, PILOS does not send a Cross-Origin-Opener-Policy response header, so pages opened by PILOS via a link that opens a new browsing context (e.g., target=\"_blank\") retain a window.opener reference back to the originating PILOS tab. A malicious destination page reached this way can use window.opener to navigate or manipulate the original PILOS tab, a technique known as reverse tabnabbing, potentially redirecting an authenticated user to a phishing page that mimics PILOS. This issue is fixed in version 4.14.1."
                }
            ],
            "source": {
                "advisory": "GHSA-j4wr-p8gh-xrw5",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-07T17:25:46.465635Z",
                                "id": "CVE-2026-71555",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "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": "2026-08-07T17:26:58.575Z"
                }
            }
        ]
    }
}