VULNERABILITY INTELLIGENCE
CVE-2026-82019
CVSS score4.2 MEDIUM
EPSS probability0.29%
CISA KEVNot currently listed
Published2026-09-14
Last modified2026-09-24
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
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.
Weakness classification
- disclosure@vulncheck.com: CWE-79