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CVE Record

CVE-2019-14282: The simple_captcha2 gem 0.2.3 for Ruby, as distributed on RubyGems.org, included a code-execution backdoor...

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

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2019-14282 is a malicious supply-chain issue: version 0.2.3 of the Ruby simple_captcha2 gem reportedly contained a third-party code-execution backdoor. Organizations that installed this exact gem version should treat affected systems as potentially compromised until dependency and runtime exposure are verified.

Executive priority

Prioritize this if Ruby applications or historical build artifacts used simple_captcha2 0.2.3. The issue is old, but a backdoored dependency changes the response from routine patching to compromise assessment.

Technical view

The CVE record describes simple_captcha2 gem 0.2.3, as distributed on RubyGems.org, as containing a third-party code-execution backdoor. The source bundle does not provide CVSS, CWE, exploit telemetry, affected CPEs, or a confirmed clean replacement version.

Likely exposure

Exposure is most likely in Ruby applications or build environments that installed simple_captcha2 version 0.2.3 from RubyGems. Evidence is incomplete for downstream packaged products or transitive usage.

Exploitation context

The provided bundle does not show CISA KEV listing or cite active exploitation. The core risk is malicious dependency execution in environments where the affected gem was installed or loaded.

Researcher notes

The record is sparse: no CVSS, CWE, exploit status, or detailed remediation is included in the source bundle. Focus validation on exact version presence, dependency provenance, and host-level evidence around systems that loaded the gem.

Mitigation direction

  • Identify and remove simple_captcha2 0.2.3 from dependencies and build artifacts.
  • Check RubyGems and Snyk guidance before selecting any replacement or version.
  • Rebuild and redeploy affected applications from trusted dependency locks.
  • Review potentially exposed hosts for compromise indicators before returning them to service.
  • Rotate secrets if affected systems executed the compromised dependency.

Validation and detection

  • Search dependency manifests and lockfiles for simple_captcha2 version 0.2.3.
  • Check CI, container images, and production build artifacts for the affected gem.
  • Confirm runtime hosts no longer load the compromised gem version.
  • Review deployment timelines against the 2019 disclosure window.
  • Document whether exposure was direct, transitive, or absent.
Prepared
Confidence
medium
Sources
5

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2019-14282 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.