Observed Signal · Aug 3, 2026 · Technical Release · Source: https://github.com/prebid/Prebid.js/releases.atom · Impact: 2/5 · Sentiment: Positive
Prebid.js 11.27.0 Released
Prebid.js version 11.27.0 was released on 2026-08-03. The release includes core fixes (escaping HTML-unsafe characters in encodeMacroURI and escaping values interpolated into generated VAST XML), new features (a Mantis RTD module and MGID Bid Adapter session props), multiple bug fixes and maintenance updates across several bid adapters and build/dependency improvements. The release artifacts (zip and tar.gz) were published with commit ea36e5e and the release action attributed to github-actions.
Prebid.js is a widely used open-source header bidding library; this release adds a new RTD module, adapter updates and security/escaping fixes that are relevant to publishers and integrators but does not represent an industry-shifting change.
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Key Takeaways & Evidence Grounding
- Prebid.js version 11.27.0 was released on 2026-08-03.
- New features: Mantis RTD module added and MGID Bid Adapter now populates bid requests with MGID session properties.
- Core bug fixes include escaping HTML-unsafe characters in encodeMacroURI macro names and escaping values interpolated into generated VAST XML.
- Maintenance updates and adapter fixes were made to adapters including Yieldmo, Sonobi, Reklamup, Adkernel, AdSpirit, Teads, IntentIQ, and Tercept.
- Release commit ea36e5eb was published via the github-actions app; source code assets (zip and tar.gz) timestamped 2026-08-03T14:33:05Z.
Connected Companies & Entities
8 Entities mapped“prebid/Prebid.js Public...”
“MGID Bid Adapter: populate bid request with MGID session props ([#15006](https://github.com/prebid/Prebid.js/pull/15006))...”
“Yieldmo Bid Adapter: guard getFloor, unmatched video imps, empty response body ([#15417](https://github.com/prebid/Prebid.js/pull/15417))...”
“dgkeywordsRtdProvider and sonobiBidAdapter: fix direct access to storage rule violations ([#15249](https://github.com/prebid/Prebid.js/pull/...”
“Reklamup Bid Adapter: update adapter ([#15361](https://github.com/prebid/Prebid.js/pull/15361))...”
“Adkernel Bid Adapter: remove obsolete aliases ([#15409](https://github.com/prebid/Prebid.js/pull/15409))...”
“AdSpirit Bid Adapter: fix Native ORTB handling ([#15420](https://github.com/prebid/Prebid.js/pull/15420))...”
“Teads Bid Adapter: forward the COPPA flag ([#15419](https://github.com/prebid/Prebid.js/pull/15419))...”
Ontology Mapping & Concepts
Related Market Signals & Shifts
Recent verified developments and strategic activity across this market segment.
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 11.29.0 Release
Prebid.js v11.29.0 was published on 2026-08-06 (commit f8feaa9) with new adapters, maintenance updates, and bug fixes. Notable items include the initial release of a DevTools MCP module, new HyperBrainz and Synapse HX bid adapters, a fix for analytics provider configuration types, and multiple maintenance updates across bid adapters (e.g., TripleLift, Yieldmo, VISX). Source tarball and zip artifacts were published with the release.
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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