WARNING: MAJOR (BREAKING) CHANGE: Update dependency urllib3 to v2 [SECURITY] (master)

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This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
urllib3	<2 -> <3

GitHub Vulnerability Alerts

CVE-2025-50181

urllib3 handles redirects and retries using the same mechanism, which is controlled by the Retry object. The most common way to disable redirects is at the request level, as follows:

resp = urllib3.request("GET", "https://httpbin.org/redirect/1", redirect=False)
print(resp.status)

# 302

However, it is also possible to disable redirects, for all requests, by instantiating a PoolManager and specifying retries in a way that disable redirects:

import urllib3

http = urllib3.PoolManager(retries=0)  # should raise MaxRetryError on redirect
http = urllib3.PoolManager(retries=urllib3.Retry(redirect=0))  # equivalent to the above
http = urllib3.PoolManager(retries=False)  # should return the first response

resp = http.request("GET", "https://httpbin.org/redirect/1")

However, the retries parameter is currently ignored, which means all the above examples don't disable redirects.

Affected usages

Passing retries on PoolManager instantiation to disable redirects or restrict their number.

By default, requests and botocore users are not affected.

Impact

Redirects are often used to exploit SSRF vulnerabilities. An application attempting to mitigate SSRF or open redirect vulnerabilities by disabling redirects at the PoolManager level will remain vulnerable.

Remediation

You can remediate this vulnerability with the following steps:

• Upgrade to a patched version of urllib3. If your organization would benefit from the continued support of urllib3 1.x, please contact sethmichaellarson@gmail.com to discuss sponsorship or contribution opportunities.
• Disable redirects at the request() level instead of the PoolManager() level.

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This PR has been generated by Renovate Bot.

[service-bot-app]

Could not automerge PR: Changed line is not a simple package update . branch: renovate/master-pypi-urllib3-vulnerability. line: +urllib3<3; python_version<="3.7"

[MSeal]

We should simply drop the <3.7 support from the packaging entirely at this point

[sonarqube-confluent]

Analysis Details

0 Issues

• 0 Bugs
• 0 Vulnerabilities
• 0 Code Smells

Coverage and Duplications

• No coverage information (66.10% Estimated after merge)
• No duplication information (5.70% Estimated after merge)

Project ID: confluent-kafka-python

View in SonarQube

[pranavrth]

LGTM!.

[renovatebot-confluentinc]

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