CVE Catalog

CVE-2026-82019

MediumCVSS 4.2
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.29%

19th percentile - higher than 19% of all known CVEs

Summary

TripleLift's ad rendering script (video-bundle.js) contains a DOM-based XSS 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.

Risk Assessment

The organization may face session hijacking and unauthorized content modification, leading to loss of trust and potential financial or data breaches.

Recommendation

Update the TripleLift ad rendering script to a version with proper origin validation for postMessage events. Additionally, consider implementing CSP headers and filtering postMessage events on the page.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS