What the KCCH cookie does
To avoid race condition in PubMatic userId generation, showad.js / universalpixel.js set this cookie first. if and only if not set already. Existence of this cookie means that current flow of the execution should not generate PubMatic userId cookie, as its already being set by other flow which has set KCCH.
Who sets it
Consent category: marketing
Marketing cookies follow visitors across sites to build advertising profiles and to measure campaigns. They always require prior consent, and a consent banner has to block them until the visitor agrees.
| Name | KCCH |
|---|---|
| Category | Marketing |
| Lifetime | 30 secs |
| Set by | PubMatic |
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From the Conzent cookie database, last updated 2026-09-27. Descriptions come from vendor documentation, cookie policies and our own scans; write to support@getconzent.com to correct one.