What is CVE-2019-14282?

CVE-2019-14282 is a critical-severity vulnerability in Simple Captcha2 Project, classified under Code Injection. CVSS score: 9.8/10. Published 2019-07-26.

How severe is CVE-2019-14282?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Simple Captcha2 Project

CVE-2019-14282

The simple_captcha2 gem 0.2.3 for Ruby, as distributed on RubyGems.org, included a code-execution backdoor inserted by a third party.

Vulnerability class: RCE (Remote Code Execution)

Published 2019-07-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.031 (87.4th percentile), scored 2026-10-08.

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.031 · newest: 0.031 · change: 0.000

Affected products

Simple Captcha2 Project — versions 0.2.3

Weakness classification (CWE)

CWE-94 — Code Injection

References

github.com/rubygems/rubygems.org/issues/2073 (Third Party Advisory)
rubygems.org/gems/simple_captcha2/versions/ (Third Party Advisory)
snyk.io/vuln/SNYK-RUBY-SIMPLECAPTCHA2-455501

Frequently asked questions

What is CVE-2019-14282?: CVE-2019-14282 is a critical-severity vulnerability in Simple Captcha2 Project, classified under Code Injection. CVSS score: 9.8/10. Published 2019-07-26.
How severe is CVE-2019-14282?: Critical severity. CVSS v3 base score is 9.8 out of 10.