Snyk has a published code exploit for this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applicationssimple_captcha2 is a gem that enables use of CAPTCHA in Rails applications.
The affected version of this package is a Malicious Package.
In simple_captcha2-0.2.3/lib/simple_captcha/middleware.rb
there is a code-execution backdoor maliciously inserted by a third party.