Threat Investigation
Request a demo

CVE-2026-82019

Medium

Description

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.

SeverityMedium
CVSS4.2
Exploit probability—
ProductTriplelift Video-bundle.js
PublishedSep 14, 2026
First seenSep 14, 2026
Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update
  • TripleLift video-bundle.js2026-04-28 or later

Affected products

ProductAffected versionsFixed in
TripleLift video-bundle.jsv < 2026-04-282026-04-28

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.