Bug#1099792: chromium 134.0.6998.35-1~deb12u1 into stable-security has broken python3-selenium on bookworm

[Andres Salomon]

Thanks for the report. This is fixed in sid, but it will have to wait for the next security update to get fixed in bookworm. Given the pace of releases though, this is likely to be as soon as this Tuesday.

As a workaround, 'apt install chromium' should fix it.

On 3/8/25 04:07, Francesco Ballarin wrote:

Source: chromium
Severity: important
X-Debbugs-Cc: c.schoen...@t-online.de, dilin...@debian.org, 
tpear...@raptorengineering.com
Control: affects -1 python3-selenium
Control: tags -1 bookworm

Hi,
there was a recent upload

[2025-03-06] Accepted chromium 134.0.6998.35-1~deb12u1 (source amd64 all) into 
stable-security (Debian FTP Masters) (signed by: Andres Salomon)

to stable-security which upgraded chromium from 133 to 134. Unfortunately, it
seems that such an upgrade has broken python3-selenium, which hasn't been
upgraded in stable since 4.8.3+dfsg-1, March 2023.

Now when using python3-selenium I get
========
Traceback (most recent call last):
   File "", line , in setUp
     self.selenium = webdriver.Chrome(options=chrome_options)
                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   File 
"/usr/lib/python3/dist-packages/selenium/webdriver/chrome/webdriver.py", line 
80, in __init__
     super().__init__(
   File 
"/usr/lib/python3/dist-packages/selenium/webdriver/chromium/webdriver.py", line 
104, in __init__
     super().__init__(
   File 
"/usr/lib/python3/dist-packages/selenium/webdriver/remote/webdriver.py", line 
286, in __init__
     self.start_session(capabilities, browser_profile)
   File 
"/usr/lib/python3/dist-packages/selenium/webdriver/remote/webdriver.py", line 
378, in start_session
     response = self.execute(Command.NEW_SESSION, parameters)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   File 
"/usr/lib/python3/dist-packages/selenium/webdriver/remote/webdriver.py", line 
440, in execute
     self.error_handler.check_response(response)
   File 
"/usr/lib/python3/dist-packages/selenium/webdriver/remote/errorhandler.py", 
line 245, in check_response
     raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.SessionNotCreatedException: Message: session not 
created
from unknown error: cannot find Chrome binary
=========
while, on the same set up, on March 3 I wasn't getting any error, which to me
suggests that the issue is caused by the upgrade from 133 to 134.

While the bug is due to an upload to stable-security, this isn't reporting a 
security
issue per se, rather a usability one.

How can a working python3-selenium be restored for bookworm users?

Thanks,
Francesco

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