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CVE-2019-14282

30
FAUCET Score

CVE-2019-14282 describes a critical code-execution backdoor discovered in version 0.2.3 of the simple_captcha2 Ruby gem, distributed via RubyGems.org. This vulnerability carries a CVSS score of 9.8 (Critical) due to its network-based attack vector, low complexity, and complete compromise potential for confidentiality, integrity, and availability. While no public exploit intelligence, Metasploit modules, or community discussions have been identified, the presence of a backdoor indicates a severe supply chain compromise.

Impacted Technologies

VendorProductVersion(s)CPE
0.2.3CPE matchmatch criteria
cpe:2.3:a:simple_captcha2_project:simple_captcha2:0.2.3:*:*:*:*:ruby:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.12%
Probability of exploitation in next 30 days
EPSS Percentile
86.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0312 is in the 78th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

rubygemsGHSA-wg6j-r28m-7293critical

Code backdoor in simple_captcha2

Jul 31, 2019

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