CVE-2026-71555

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Source
https://cve.org/CVERecord?id=CVE-2026-71555
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-71555.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-71555
Aliases
  • GHSA-j4wr-p8gh-xrw5
Published
2026-08-06T21:51:55.890Z
Modified
2026-08-07T11:49:59.753432206Z
Severity
  • 4.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N CVSS Calculator
Summary
PILOS: Reverse tabnabbing in room description
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71555.json",
    "cwe_ids": [
        "CWE-1022"
    ]
}
References

Affected packages

Git / github.com/thm-health/pilos

Affected ranges

Type
GIT
Repo
https://github.com/thm-health/pilos
Events
Introduced
158beb6e1fa6b214e97a8a76da3a29cfaac40e1f
Fixed
82791a0e73f47733897dfcf01d5a9b866889bb83
Database specific 
{
    "extracted_events": [
        {
            "introduced": "2.1.0"
        },
        {
            "fixed": "4.14.1"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

v2.*
v2.1.0
v2.1.1
v2.3.0
v2.3.1
v2.3.2
v2.3.3
v2.3.4
v2.4.0
v3.*
v3.0.0
v3.0.1
v3.0.2
v3.0.3
v4.*
v4.1.0
v4.1.1
v4.1.2
v4.10.0
v4.11.0
v4.12.0
v4.13.0
v4.14.0
v4.2.0
v4.3.0
v4.3.1
v4.4.0
v4.5.0
v4.6.0
v4.6.1
v4.7.0
v4.7.1
v4.8.0
v4.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-71555.json"