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vuln-cve/data/2026/71xxx/CVE-2026-71555.json
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{
"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"
}
}
]
}
}