Wishing everyone a very happy new year 2026! 🎉

We are pleased to announce that the IAB TCF v2.3 update is now available to all our customers.

Aligned with changes in v2.3, we now support mandatory inclusion of the Disclosed-Vendors segment in every TC string, immediately following the Core segment. This update impacts encoding/decoding, UI flows, SDKs, validators, and vendor behavior.

You can see the availability of IAB TCF v2.3 under Domain Settings -> Advanced -> Framework -> Type dropdown

Key Updates

1. Disclosed-Vendors Segment Now Mandatory
   • The disclosedVendors segment is now included in all TC strings and shared with vendors in production.
   • The segment appears after the Core segment in the serialized TC string.
2. Updated TC String Format & Parsing
   • All encoding and decoding logic has been updated to support the new segment.
   • Vendors can now reliably parse the disclosedVendors segment, eliminating ambiguity.
3. Vendor Disclosure & Legitimate Interest
   • Vendors declaring Legitimate Interest for special purposes can now definitively determine if they were disclosed in the CMP UI.
4. Compatibility & Migration
   • Both v2.2 and v2.3 formats are supported during the transition period, with v2.3 now live in production.