What is the CVSS score of CVE-2013-4660?

CVE-2013-4660 has a CVSS 2.0 base score of 6.8 (Medium). CVSS vector: AV:N/AC:M/Au:N/C:P/I:P/A:P. EPSS exploitation probability: 64.5%.

Is there a public PoC exploit available for CVE-2013-4660?

Yes, a public proof-of-concept exploit is available for CVE-2013-4660. Prioritise patching immediately. EPSS: 64.5%.

Is there a patch available for CVE-2013-4660?

Yes, a patch is available for CVE-2013-4660. Update the affected software to the latest version immediately.

Node.js CVE-2013-4660

MEDIUM

Improper Input Validation (CWE-20)

2013-06-28 cve@mitre.org

RCE Node.js Js Yaml Nodeca

6.8

CVSS 2.0 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-20 OWASP Top 10:2025 A05:2025 - Injection ASVS 5.0 V2 - Validation and Business Logic Input validation, allowlisting
Impact	CVSS score of 6.8 (MEDIUM). Attack characteristics: network attack vector, M complexity. Public proof-of-concept exploit code is available. EPSS exploitation probability: 64.51%.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

Patch available 64.5% exploitation probability (EPSS)

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AnalysisAI

The JS-YAML module before 2.0.5 for Node.js parses input without properly considering the unsafe !!js/function tag, which allows remote attackers to execute arbitrary code via a crafted string that. Rated medium severity (CVSS 6.8), this vulnerability is remotely exploitable. Public exploit code available and EPSS exploitation probability 64.5%.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affected Packages

npm js-yaml fix: 2.0.5

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in npm

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-20. The JS-YAML module before 2.0.5 for Node.js parses input without properly considering the unsafe !!js/function tag, which allows remote attackers to execute arbitrary code via a crafted string that triggers an eval operation. Affected products include: Nodeca Js-Yaml. Version information: before 2.0.5.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 6.8 MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Confidentiality

Integrity

Availability

DescriptionCVE.org

Threat Intelligence Overview

Threat Score

4.8/10

Composite threat intelligence

EPSS Score

64.5%

Top 2% exploitable

Exploit

POC

Public exploit code exists

Data Quality

5 sources

Confidence: Medium

NVD

CVE.org

EPSS POC (1)

Exploit-DB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC Yes

EPSS 64.5%

Patch available Yes

Active threat Yes

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Out-of-Cycle

Exploitation· derived

Active

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

High

Priority Score

134

Low Medium High Critical

KEV: 0

EPSS: +65

CVSS: +34

PoC: +20

Weaponized: +15

Threat intel: 0

Gov advisory: 0

Attack Technique

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)CVE.org

cpe:2.3:a:nodeca:js-yaml:*:*:*:*:*:*:*:*

cpe:2.3:a:nodeca:js-yaml:0.2.0:*:*:*:*:*:*:*

cpe:2.3:a:nodeca:js-yaml:0.2.1:*:*:*:*:*:*:*

cpe:2.3:a:nodeca:js-yaml:0.2.2:*:*:*:*:*:*:*

cpe:2.3:a:nodeca:js-yaml:0.3.0:*:*:*:*:*:*:*

cpe:2.3:a:nodeca:js-yaml:0.3.1:*:*:*:*:*:*:*

cpe:2.3:a:nodeca:js-yaml:0.3.2:*:*:*:*:*:*:*

cpe:2.3:a:nodeca:js-yaml:0.3.3:*:*:*:*:*:*:*

cpe:2.3:a:nodeca:js-yaml:0.3.4:*:*:*:*:*:*:*

cpe:2.3:a:nodeca:js-yaml:0.3.5:*:*:*:*:*:*:*

cpe:2.3:a:nodeca:js-yaml:0.3.6:*:*:*:*:*:*:*

cpe:2.3:a:nodeca:js-yaml:0.3.7:*:*:*:*:*:*:*

cpe:2.3:a:nodeca:js-yaml:1.0.0:*:*:*:*:*:*:*

cpe:2.3:a:nodeca:js-yaml:1.0.1:*:*:*:*:*:*:*

cpe:2.3:a:nodeca:js-yaml:1.0.2:*:*:*:*:*:*:*

cpe:2.3:a:nodeca:js-yaml:1.0.3:*:*:*:*:*:*:*

cpe:2.3:a:nodeca:js-yaml:2.0.0:*:*:*:*:*:*:*

cpe:2.3:a:nodeca:js-yaml:2.0.1:*:*:*:*:*:*:*

cpe:2.3:a:nodeca:js-yaml:2.0.2:*:*:*:*:*:*:*

cpe:2.3:a:nodeca:js-yaml:2.0.3:*:*:*:*:*:*:*

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References

Advisories & patches

ADVISORY http://portal.nodesecurity.io/advisories/js-yaml

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GitHub PoC

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