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CVE-2026-82019

TripleLift video-bundle.js DOM-based XSS via postMessage

CVSS 4.0 2.3 LOWCVSS 3.1 4.2 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-82019

Published

TripleLift's ad rendering script (video-bundle.js) contains a DOM-based cross-site scripting vulnerability that allows unauthenticated attackers to execute arbitrary JavaScript in a publisher's domain by sending crafted postMessage payloads without origin validation. Attackers can cause a victim to visit an attacker-controlled page that sends malicious postMessage events to a publisher page running the ad script, enabling session hijacking and unauthorized DOM manipulation.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-82019

Published

video-bundle.js

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "defaultStatus": "affected",
                    "vendor": "TripleLift",
                    "product": "video-bundle.js",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "versionType": "date",
                            "lessThan": "2026-04-28"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON