puppeteer-core-v25.9.0

cloudflare/pingorapuppeteer-core-v25.9.0Aug 25, 2026by browser-automation-bot

AI Summary

Updates the Puppeteer Core browser automation library to version 25.9.0, including browser version upgrades and new interaction capabilities for WebMCP.

Key Highlights

Rolls to Firefox 154.0 and Chrome 152.0.7977.54
Adds support for Shadow DOMs in MutationPoller
Enables canceling tool execution in WebMCP

New Features

Support for Shadow roots in MutationPoller
Support for canceling tool execution in WebMCP

Full Release Notes

## [25.9.0](https://github.com/puppeteer/puppeteer/compare/puppeteer-core-v25.8.0...puppeteer-core-v25.9.0) (2026-08-24)


### 🎉 Features

* roll to Firefox 154.0 ([#15361](https://github.com/puppeteer/puppeteer/issues/15361)) ([d702da7](https://github.com/puppeteer/puppeteer/commit/d702da7ec7d72e3a814ffcf0c4bc70a11c171748))
* support shadow roots in MutationPoller ([#15292](https://github.com/puppeteer/puppeteer/issues/15292)) ([4670a25](https://github.com/puppeteer/puppeteer/commit/4670a25b16d48c8be8e4a747412a8caf4509063f))
* **webmcp:** support canceling tool execution ([#15365](https://github.com/puppeteer/puppeteer/issues/15365)) ([3523f36](https://github.com/puppeteer/puppeteer/commit/3523f36e840b6c7ebf1167eddb5c2e83c9262c68))


### 🛠️ Fixes

* roll to Chrome 152.0.7977.54 ([#15363](https://github.com/puppeteer/puppeteer/issues/15363)) ([9088feb](https://github.com/puppeteer/puppeteer/commit/9088feb7d71cda035eee4f4d21cb20fee9238aa9))
* set frame content without document.write ([#15358](https://github.com/puppeteer/puppeteer/issues/15358)) ([83f8d1c](https://github.com/puppeteer/puppeteer/commit/83f8d1c8536f238dbdfdf041c72581bdf2b6f3de))