CVE-2019-14282
Code backdoor in simple_captcha2
The simple_captcha2 gem 0.2.3 for Ruby, as distributed on RubyGems.org, included a code-execution backdoor inserted by a third party.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
The simple_captcha2 gem 0.2.3 for Ruby, as distributed on RubyGems.org, included a code-execution backdoor inserted by a third party.
- Record
CVE-2019-14282- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-94
- Updated
- 2026-11-02
CVE List No score
The simple_captcha2 gem 0.2.3 for Ruby, as distributed on RubyGems.org, included a code-execution backdoor inserted by a third party.
- Record
CVE-2019-14282- Updated
- 2026-11-02
EUVDEUVD-2019-0606 No score
The simple_captcha2 gem 0.2.3 for Ruby, as distributed on RubyGems.org, included a code-execution backdoor inserted by a third party.
- Record
EUVD-2019-0606- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-wg6j-r28m-7293
Code backdoor in simple_captcha2
The simple_captcha2 gem 0.2.3 for Ruby, as distributed on RubyGems.org, included a code-execution backdoor inserted by a third party.
- Record
GHSA-wg6j-r28m-7293- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-94
- Updated
- 2026-11-02
OSVGHSA-wg6j-r28m-7293
Code backdoor in simple_captcha2
The simple_captcha2 gem 0.2.3 for Ruby, as distributed on RubyGems.org, included a code-execution backdoor inserted by a third party.
- Record
GHSA-wg6j-r28m-7293- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-94
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
simple_captcha2RubyGems |
0.2.3 to 0.2.3 | None known |
simple_captcha2RubyGems |
Listed versions 0.2.3 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-14282 is a critical vulnerability (CVSS 9.8) in Simple Captcha2 Project Captcha2, published July 26, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.12%, the 87th percentile. No source names a fixed version.
References
github.com/rubygems/rubygems.org/issues/2073
rubygems.org/gems/simple_captcha2/versions
snyk.io/vuln/SNYK-RUBY-SIMPLECAPTCHA2-455501
nvd.nist.gov/vuln/detail/CVE-2019-14282
security.snyk.io/vuln/SNYK-RUBY-SIMPLECAPTCHA2-455501