How severe is CVE-2014-4326?

No CVSS score has been assigned to CVE-2014-4326 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2014-4326?

CVE-2014-4326 affects the following packages: logstash (RubyGems). Ecosystems affected: RubyGems.

How do I fix CVE-2014-4326?

Update logstash to 1.4.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2014-4326 is resolved across your whole dependency graph.

How do I detect CVE-2014-4326 in my RubyGems dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for logstash, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2014-4326 if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against CVE-2014-4326?

O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2014-4326 can be triaged on real exposure rather than presence alone.

Is CVE-2014-4326 actively exploited in the wild?

No public exploit code has been indexed for CVE-2014-4326 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2014-4326?

CVE-2014-4326 has an EPSS (Exploit Prediction Scoring System) score of 3.3%, placing it in the 88th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2014-4326?

CVE-2014-4326 is classified as OS Command Injection (CWE-78). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2014-4326 published, and has it been updated?

CVE-2014-4326 was published on May 14, 2022 and was last updated on April 16, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

💎 RubyGems

Not in CISA KEV

CVE-2014-4326 — logstash

CVE-2014-4326 is a OS Command Injection vulnerability in logstash. A fix is available for logstash — see the affected versions and patch details below.

Elasticsearch Logstash allows remote attackers to execute arbitrary commands

Published

May 14, 2022

Updated

Apr 16, 2025

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Sep 18, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

3.3%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs88th percentile — riskier than 88% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Real-World Exposure

1 pkg affected

💎logstash

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects RubyGems packages — download data is not available via public APIs for these ecosystems.

Description

Elasticsearch Logstash 1.0.14 through 1.4.x before 1.4.2 allows remote attackers to execute arbitrary commands via a crafted event in (1) zabbix.rb or (2) nagios_nsca.rb in outputs/.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
💎RubyGems	`logstash`	≥ 1.0.14&&< 1.4.2	1.4.2`bundle update logstash --conservative`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for logstash, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update logstash to 1.4.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2014-4326 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2014-4326 can be triaged on real exposure rather than presence alone.

Tailored to CVE-2014-4326. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Elasticsearch Logstash 1.0.14 through 1.4.x before 1.4.2 allows remote attackers to execute arbitrary commands via a crafted event in (1) `zabbix.rb` or (2) `nagios_nsca.rb` in `outputs/`.

O3 Security · Impact-Aware SCA

Is CVE-2014-4326 in your dependencies?

O3 Security finds CVE-2014-4326 across RubyGems dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

Scan my dependencies How O3 SCA works