Sourced from selenium-webdriver's releases.

Selenium 4.51.0

Detailed Changelogs by Component

Java     |     Python     |     DotNet     |     Ruby     |     JavaScript

What's Changed

• [py] Validate WebSocket response interval correctly by @​cuishuang in SeleniumHQ/selenium#17984
• [py][bidi] Send setClientWindowState rect members as sibling params by @​AutomatedTester in SeleniumHQ/selenium#18100
• [rust] Degrade to empty metadata when the cache cannot be read by @​AutomatedTester in SeleniumHQ/selenium#18101
• [dotnet] [test] Separate project for NUnit infrastructure by @​nvborisenko in SeleniumHQ/selenium#18104
• [java] Do not leak the HttpClient on startup failure by @​joerg1985 in SeleniumHQ/selenium#18047
• [java] Add RemoteWebDriver.getClientFactory() and move HttpCommandExecutor field removal to 4.53 by @​diemol in SeleniumHQ/selenium#18111
• [dotnet] [test] Parallelize internal testing by @​nvborisenko in SeleniumHQ/selenium#18110
• [build] pin Firefox BiDi vendor CDDL from the Firefox repository by @​titusfortner in SeleniumHQ/selenium#18094
• [build] remove obsolete third_party dependencies and dead build references by @​titusfortner in SeleniumHQ/selenium#18072
• [build] generate release docs at approval and commit them after the packages publish by @​titusfortner in SeleniumHQ/selenium#18113
• [dotnet] [test] Upgrade NUnit library to v5 by @​nvborisenko in SeleniumHQ/selenium#18114
• [build] recover from incomplete Java release by dropping staged repositories when found by @​titusfortner in SeleniumHQ/selenium#18112
• [dotnet] [build] Escape macOS Edge browser path by @​nvborisenko in SeleniumHQ/selenium#18126
• [js][bidi] Add vendor specific class generation by @​pujagani in SeleniumHQ/selenium#18125
• [java] assert setFiles uploads reach the server in SetFilesCommandTest by @​yashp676 in SeleniumHQ/selenium#18058
• [java][bidi] Decode nested RemoteValues from the parsed tree instead of re-serializing each subtree by @​yashp676 in SeleniumHQ/selenium#18095
• [rb] type a field-less synthetic map record as a validated map by @​aguspe in SeleniumHQ/selenium#18121
• [java] remove guava from client bindings #12737 by @​joerg1985 in SeleniumHQ/selenium#13739
• [build] clean up IntelliJ project files and align .editorconfig with formatters by @​titusfortner in SeleniumHQ/selenium#18119
• [javascript] Create @​seleniumhq/atoms npm package from TypeScript atoms by @​AutomatedTester in SeleniumHQ/selenium#17459
• [java][bidi] Add BiDi code generator by @​pujagani in SeleniumHQ/selenium#17777
• [java][bidi] Type field-less synthetic map records as Map<String, V> by @​yashp676 in SeleniumHQ/selenium#18122
• [javascript] Publish atoms under the @​selenium npm scope by @​AutomatedTester in SeleniumHQ/selenium#18132
• [build] sign Java artifacts in-process with in-memory PGP keys instead of gpg-agent by @​titusfortner in SeleniumHQ/selenium#18130
• [py] Support Python 3.15 by @​cgoldberg in SeleniumHQ/selenium#18065
• [javascript] Publish @​seleniumhq/atoms as part of the npm release by @​AutomatedTester in SeleniumHQ/selenium#18133
• [js] Remove the WebSQL and AppCache atoms by @​AutomatedTester in SeleniumHQ/selenium#18137
• [build] remove bazel patches that now have upstream fixes by @​titusfortner in SeleniumHQ/selenium#18140
• [rust] configure the Chrome sandbox after unpacking a Chrome for Testing build on Windows by @​titusfortner in SeleniumHQ/selenium#18139
• [dotnet] [test] Entry point to mutate driver options per fixture by @​nvborisenko in SeleniumHQ/selenium#18141
• [js] Add webextension methods on the driver with BiDi and fallback by @​pujagani in SeleniumHQ/selenium#18127
• [build] source the Java and .NET versions from a root version.bzl that tests do not read by @​titusfortner in SeleniumHQ/selenium#18138
• [build] pin the driver location once per test process so services built in tests skip Selenium Manager by @​titusfortner in SeleniumHQ/selenium#18143
• [java] Do not pass a bare --proxy to Selenium Manager by @​Mochxd in SeleniumHQ/selenium#18089
• [java][bidi] Update tests to use converter functions by @​pujagani in SeleniumHQ/selenium#18146
• [java] manage state in tests not in global hooks by @​titusfortner in SeleniumHQ/selenium#18142
• [build] add stub mode option for using selenium manager with bazel by @​titusfortner in SeleniumHQ/selenium#18135

New Contributors

• @​cuishuang made their first contribution in SeleniumHQ/selenium#17984

... (truncated)

Sourced from selenium-webdriver's changelog.

4.51.0 (2026-10-09)

• Support CDP versions: v153, v154, v155
• [build] Automated CDDL Spec Update (#18118)
• type a field-less synthetic map record as a validated map (#18121)
• [build] Automated Browser Version Update (major) with CDP (#18131)

• 35c5fab [build] Prepare for release of selenium-4.51.0 (#18149)
• 8f7503a [build] Automated Browser Version Update (major) with CDP (#18131)
• f3a43a5 [build] remove the Windows session settle sleeps now that Selenium Manager co...
• 953b27b [rb] drop Safari captureScreenshot guard now that Safari Technology Preview 2...
• 92807c9 [build] pin the driver location once per test process so services built in te...
• e0c56c9 [rb] update test guard for different bidi error in Chrome beta
• 788fcf3 [rb] type a field-less synthetic map record as a validated map (#18121)
• 8ba36d4 [build] Automated Dependency Update (#18124)
• 6d04770 [build] Automated CDDL Spec Update (#18118)
• e1af1a7 [rb] update tests to guard BiDi browsing context on Safari and Windows Firefo...
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