Observed Signal · Apr 29, 2026 · Technical Release · Source: https://github.com/prebid/Prebid.js/releases.atom · Impact: 2/5 · Sentiment: Positive
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.
Prebid.js is a widely used open-source header-bidding library; this release adds adapters, a content-provenance RTD provider (C2PA) and privacy-related GPP controls which matter to publishers and integrators, but changes are incremental rather than industry-shifting.
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Key Takeaways & Evidence Grounding
- Prebid.js 11.9.0 was released on 2026-04-29 (GitHub release by github-actions).
- New features include Encypher RTD Provider (C2PA content provenance signals) and new bid adapters: goadserver, mtc, tne_catalyst.
- Added pgamdirect Analytics Adapter and expanded GPP control modules with an option to restrict additional activities.
- Bug fix: Core now limits mergeConfig notifications to updated topics.
- Maintenance: disabled user syncs in Firefox and WebKit Chrome, migrated Gulp sourcemap handling to native Gulp v5, and bumped several dependencies (fast-xml-parser, @xmldom/xmldom).
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Prebid.js 11.8.0 Released
Prebid.js 11.8.0 was published as an official release on GitHub, introducing new features, bug fixes, and maintenance updates for the header-bidding toolkit. Notable additions include a new bidder integration (PGAM Direct), an initial release of the IntimateMerger analytics adapter, and a Bid Filter Module option to handle bidResponseFilter for in-banner video in multi-format units. The release also fixes an outstream video issue in the CriteoBidAdapter and contains multiple maintenance changes — e.g., CI artifact retry logic, use of window.crypto for UUID randomness, RTD/submodule updates (51Degrees, Permutive, wurfl), and various adapter compatibility and typing cleanups. Source archives (zip and tar.gz) were published with the release.
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 11.23.0 Released
Between July 8–20, 2026 Prebid published three Prebid.js releases: 11.23.0 (2026-07-08, commit 495a6b6), 11.24.0 (2026-07-14, assets ts 2026-07-14T16:59:08Z) and 11.25.0 (2026-07-20, commit 3701f58). The releases introduced new bid adapters (MediaGo Technology LLC and JJTech in earlier updates; Pinelake and OCM in 11.25.0), core fixes (escaping user‑sync iframe URLs, PBS host‑company vendor consent check, TCF control TypeError fix, gamAdserverVideo cust_params array encoding) and bug fixes (TeqBlaze undefined bidfloor, mobile GAME_MANUAL_INTERSTITIAL rendering, usersync iframe styling). Maintenance and quality improvements included Equativ adapter enhancements (placementuuid + forwarded inventory), Aso GVL IDs, Cortex regional endpoints, build/dependency bumps, CI/e2e/workflow fixes, removal of deprecated istanbul, lint fixes, and published source archives.
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