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TI-2026-56608 Aliases CVE-2026-82019GHSA-cf92-q3x8-658f

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

Priority MEDIUM 45CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
High
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
None · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00289 21st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed video-bundle.js (TripleLift): 2026-04-28

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TripleLiftvideo-bundle.jsbefore 2026-04-282026-04-28Patch availableCNA
  • video-bundle.js VendorTripleLift Affected before 2026-04-28 Fixed in 2026-04-28 Patch available CNA

Remediation

  • Fix · CNA video-bundle.js (TripleLift) Fixed in 2026-04-28

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-82019
  2. 2026-10-03 Alias added: GHSA-cf92-q3x8-658f

References

Exploit 1

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences