Observed Signal · Jun 25, 2026 · Technical Release · Source: https://github.com/prebid/Prebid.js/releases.atom · Impact: 3/5 · Sentiment: Positive
Prebid.js 11.21.0 Released
Prebid.js version 11.21.0 was published on June 25, 2026. The release bundles core fixes (renderer lookup guard, several linting hardenings, a bidResponseFilter fix, browserslist target update, and GitHub Actions updates to Node 24) and a set of maintenance updates to multiple bid adapters and analytics adapters (Brid, Allegro, Medianet, Mediago, Yahoo Ads, TTD, Onetag, ADBRO, Uniquest). The release entry was created by the github-actions app and references commit dfd6487; source archives (zip and tar.gz) are attached with timestamps of 2026-06-25T13:56:02Z. Changes include adapter-specific bug fixes, parameter/type enforcement, endpoint compression configuration, and metadata/exposure updates across adapters.
Prebid.js is a widely used open-source header bidding wrapper; this technical release updates core behavior, CI tooling (Node 24), and many bid adapters—changes that affect adapter compatibility, request/response handling and publisher integrations across the programmatic stack.
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Key Takeaways & Evidence Grounding
- Prebid.js version 11.21.0 was released on 2026-06-25.
- Release includes core fixes such as guarding renderer lookup for bids with no ad unit, linting rule hardenings, a bidResponseFilter attribute enforcement fix, browserslist target update, and GitHub Actions updates to use Node 24.
- Maintenance changes touch multiple bid/analytics adapters (Brid, Allegro, Medianet, Mediago, Yahoo Ads, TTD, Onetag, ADBRO, Uniquest) including bug fixes, endpointCompression support, metadata exposure and parameter type enforcement.
- Release was published via the github-actions app and references commit dfd64878f806ec55c5fcf93f4beb91ca2f0196b0; source code archives (zip and tar.gz) were attached with timestamps 2026-06-25T13:56:02Z.
Connected Companies & Entities
5 Entities mapped“prebid/Prebid.js Public...”
“Allegro Bid Adapter: fix config stub tests ([#15239])...”
“Onetag Bid Adapter: add category and creative attribute meta fields in interpretResponse ([#15216])...”
Ontology Mapping & Concepts
Related Market Signals & Shifts
Recent verified developments and strategic activity across this market segment.
Prebid.js 11.20.0 Released
Prebid.js published release 11.20.0 on 2026-06-24. The release includes core pull requests (notably alignment of Prebid Server adapter sync browser restrictions), a Windows build bug fix, multiple maintenance updates, and several adapter changes such as adding a new adapter (m152), updates to billow_rtb25 (sharedId support), and Uid2 id module adjustments. The release was published via the GitHub Actions account and includes source code archives (zip and tar.gz). The changelog lists linting and maintenance PRs, CI and build tool updates, adapter fixes and declarations (e.g., IAB Europe TCF GVL Vendor ID for Floxis), and various test and dependency updates.
Prebid.js 11.15.0 Released
Prebid.js v11.15.0 was released on 2026-06-04 via the prebid/Prebid.js GitHub repository. The release includes core PRs (consent/legal-basis improvements, bid desirability adjustment, and enforcement of accessRequestCredentials), new features and adapters (Vuukle ortbConverter rewrite with video/native and new endpoint; Hubvisor analytics adapter; new ferio adapter; Ogury instream video support; Acxiom realid userID module), multiple bug fixes (including Criteo Id System and hb_cache_host fixes), and a range of maintenance updates across many bid adapters, identity modules and build/test tooling. Source archives (zip and tar.gz) were published with the tag.
Prebid.js 11.9.0 Released
Prebid.js published release 11.9.0 on 2026-04-29 (tagged via GitHub Actions). The release adds new features including an Encypher RTD provider that surfaces C2PA content provenance signals, multiple new bid adapters (goadserver, mtc, tne_catalyst), and a pgamdirect analytics adapter. It also introduces an option in GPP control modules to further restrict activities. The update contains a core bug fix limiting mergeConfig notifications to updated topics and several maintenance changes: disabling user syncs in Firefox and WebKit-based Chrome, build-system migrations (native Gulp v5 sourcemap handling, webpack source-map changes), adapter improvements (GumGum, Vidazoo, Mile, Showheroes, Limelight), and dependency bumps. The release is relevant to publishers, header-bidding integrators and ad-tech implementers managing Prebid.js builds and privacy/consent flows.
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