question-mark
Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Unable to identify Cloudflare IUAM Javascript on website

See original GitHub issue

Before creating an issue, first upgrade cfscrape with pip install -U cfscrape and see if you’re still experiencing the problem. Please also confirm your Node version (node --version or nodejs --version) is version 10 or higher.

Make sure the website you’re having issues with is actually using anti-bot protection by Cloudflare and not a competitor like Imperva Incapsula or Sucuri. And if you’re using an anonymizing proxy, a VPN, or Tor, Cloudflare often flags those IPs and may block you or present you with a captcha as a result.

Please confirm the following statements and check the boxes before creating an issue:

  • I’ve upgraded cfscrape with pip install -U cfscrape
  • I’m using Node version 10 or higher
  • The site protection I’m having issues with is from Cloudflare
  • I’m not using Tor, a VPN, or an anonymizing proxy

Python version number:3.6.0

cfscrape version number:2.1.1

Code snippet involved with the issue

scraper = cfscrape.create_scraper(delay=5) print(scraper.get(session_url).content)

Complete exception and traceback

(If the problem doesn’t involve an exception being raised, leave this blank)

ValueError: Unable to identify Cloudflare IUAM Javascript on website. Cloudflare may have changed their technique, or there may be a bug in the script.

URL of the Cloudflare-protected page: https://cn.investing.com/

[LINK GOES HERE]

URL of Pastebin/Gist with HTML source of protected page

[LINK GOES HERE]

Issue Analytics

  • State:open
  • Created 2 years ago
  • Comments:6 (1 by maintainers)

github_iconTop GitHub Comments

1reaction
VeNoMouScommented, May 31, 2021

I choose not to update the public one, its not a case of “can no longer fix”…

The paid subscription code works fine… (find me on discord if you wish to inquire)

0reactions
andress134commented, May 31, 2021

This library is unmaintained and dead, see #406

Also https://github.com/VeNoMouS/cloudscraper/ just republish but script still not work

I just saw on twitter that 1 week ago, cloudflare posted an announcement about ‘’ cloudscraper ‘’ saying that the new update destroyed cloudscraper forever I think that the cloudscraper admin @VeNoMouS can no longer fix this public repo, probably only the version paid by him will keep it updated

a new method would be to use puppeteer, I found this version of cloudscraper based on puppeteer https://github.com/ryxnSZN/cloudscraper it needs a few updates to bypass the IUAM page

Cloudflare no longer uses the cfduid cookie in headers (set-cookie)

// https://github.com/scaredos/cfresearch here some info about new challenge

Read more comments on GitHub >

github_iconTop Results From Across the Web

ValueError: Unable to identify Cloudflare IUAM Javascript on ...
ValueError: Unable to identify Cloudflare IUAM Javascript on website. Cloudflare may have changed their technique, or there may be a bug in the...
Read more >
ValueError: Unable to identify Cloudflare IUAM ... - Bountysource
Before creating an issue, first upgrade cfscrape with pip install -U cfscrape and see if you're still experiencing the problem.
Read more >
cfscrape 2.1.1 - PythonFix.com
A simple Python module to bypass Cloudflare's anti-bot page. ... Unable to identify Cloudflare IUAM Javascript on website.
Read more >
Scraping a site that uses cloudflare with Scrapy. - Reddit
Is there a solution to scrap a website that uses cloudflare ... ValueError: Unable to identify Cloudflare IUAM Javascript on website.
Read more >
Understanding Cloudflare Under Attack mode (advanced ...
The Under Attack mode requires your browser to support Javascript ... Validated users access your website and suspicious traffic is blocked.
Read more >

github_iconTop Related Medium Post

No results found

github_iconTop Related StackOverflow Question

No results found

github_iconTroubleshoot Live Code

Lightrun enables developers to add logs, metrics and snapshots to live code - no restarts or redeploys required.
Start Free

github_iconTop Related Reddit Thread

No results found

github_iconTop Related Hackernoon Post

No results found

github_iconTop Related Tweet

No results found

github_iconTop Related Dev.to Post

No results found

github_iconTop Related Hashnode Post

No results found