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WEBCAT version history - 7 versions

WEBCAT by Freedom of the Press Foundation

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WEBCAT version history - 7 versions
  • Be careful with old versions! These versions are displayed for testing and reference purposes.You should always use the latest version of an add-on.

  • Latest version

    Version 2.6.2

    Released Mar 1, 2026 - 89.24 KB
    Works with firefox 140.0 and later, android 142.0 and later
    Fixes:
    - Error in validating the update file
    - Restore WEBCAT url bar error icon on error page

    Source code released under MIT License

    Download Firefox and get the extension
    Download file
  • Older versions

    Version 2.6.1

    Released Feb 26, 2026 - 89.16 KB
    Works with firefox 140.0 and later, android 142.0 and later
    Fix:
    - Display error code in error page more reliably

    Source code released under MIT License

    Download file
  • Version 2.6.0

    Released Feb 26, 2026 - 88.87 KB
    Works with firefox 140.0 and later, android 142.0 and later
    Fixes:
    - Race condition for WASM validation
    - Retry update logic for failed update attempt

    Source code released under MIT License

    Download file
  • Version 2.5.0

    Released Feb 26, 2026 - 88.82 KB
    Works with firefox 140.0 and later, android 142.0 and later
    Fixes:
    - Tentative TBB startup fix

    Source code released under MIT License

    Download file
  • Version 2.4.0

    Released Feb 25, 2026 - 88.83 KB
    Works with firefox 140.0 and later, android 142.0 and later
    Fixes:
    - Better WebAssembly hooking
    - Display neutral WEBCAT icon when non-enrolled domains use enrolled resources
    - Better in-memory database management
    - Minor fixes

    Source code released under MIT License

    Download file
  • Version 2.3.0

    Released Feb 23, 2026 - 88.82 KB
    Works with firefox 140.0 and later, android 142.0 and later
    Feature updates:
    - Basic compatibility with Tor Browser
    - Added support for inline scripts via CSP sha256-xxx hashes
    - Stability fixes

    Source code released under MIT License

    Download file
  • Version 2.2.0

    Released Feb 2, 2026 - 84.37 KB
    Works with firefox 140.0 and later, android 142.0 and later

    Source code released under MIT License

    Download file
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