CVE-2026-82019
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.
Scoring
- Severity
- LOW
- CVSS base score
- 4.2
- CVSS vector
- CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- EPSS probability
- 0.22%
- CWE
- CWE-79
- Published
- 2026-09-14
- Last modified
- 2026-09-14
Affected products
- TripleLift video-bundle.js
Weakness type
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