Unverified60% confidenceFactExact time
Manifest V3 is the extension security architecture that Google has been mandating since 2022, which prohibits remote code execution, restricts blob URLs, and strengthens CSP.
2
Sources
60%
Confidence
Long-term
Relevance
7/11/2026
First Seen
Sources
WisprGemma：纯浏览器本地语音输入，数据不上云
redditr/GoogleGeminiAI7/10/2026
Related Claims
UnverifiedStarting with Chrome Manifest V3, Google made major adjustments to the extension permission model, requiring stricter permission declarations and content security policies.74% similarVerifiedIn 2023, Google mandatorily migrated the extension ecosystem to Manifest V3, deprecating the persistent background pages allowed in the V2 era in favor of an event-driven mechanism based on Service Workers.73% similarVerifiedStarting in 2023, Google mandatorily enforced the Manifest V3 (MV3) specification, changing the webRequest API from blocking mode to declarative mode and requiring extensions to request permissions at installation time.71% similarUnverifiedStarting in 2024, Google mandated that all Chrome extensions migrate to the Manifest V3 architecture, which replaces background scripts with on-demand Service Workers and replaces the webRequest API with declarativeNetRequest69% similarUnverifiedGoogle unilaterally pushed forward and then rolled back the Manifest V3 extension API changes, affecting the entire browser extension ecosystem that depends on Chromium.69% similar
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