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CVE-2013-4660

43
FAUCET Score

CVE-2013-4660 describes a critical code execution vulnerability in the JS-YAML module for Node.js, affecting versions prior to 2.0.5. This flaw allows remote attackers to execute arbitrary code by exploiting the unsafe parsing of the !!js/function tag, which triggers an eval operation. With a CVSS score of 6.8, this vulnerability has a high attack complexity but can lead to partial confidentiality, integrity, and availability compromise. Exploit intelligence indicates the existence of a Metasploit module (EDB-28655) for this vulnerability, though there is no evidence of active exploitation in the wild, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.0.4CPE matchmatch criteria
cpe:2.3:a:nodeca:js-yaml:*:*:*:*:*:*:*:*
0.2.0CPE matchmatch criteria
cpe:2.3:a:nodeca:js-yaml:0.2.0:*:*:*:*:*:*:*
0.2.1CPE matchmatch criteria
cpe:2.3:a:nodeca:js-yaml:0.2.1:*:*:*:*:*:*:*
0.2.2CPE matchmatch criteria
cpe:2.3:a:nodeca:js-yaml:0.2.2:*:*:*:*:*:*:*
0.3.0CPE matchmatch criteria
cpe:2.3:a:nodeca:js-yaml:0.3.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
17.19%
Probability of exploitation in next 30 days
EPSS Percentile
96.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: Nodejs js-yaml load() Code Execution · Jun 28, 2013
ExploitDB: EDB-28655 · Sep 30, 2013
This CVE's current EPSS score of 0.1719 is in the 97th percentile among its peer group of 19,955 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (1)

npmpatch availablevia ghsa
Product: js-yamlFixed in: 2.0.5

Vendor Advisories (1)

npmGHSA-xxvw-45rp-3mj2critical

Deserialization Code Execution in js-yaml

Oct 24, 2017

References

portal.nodesecurity.io / advisories/js-yaml
Vendor Advisory
nealpoole.com / blog/2013/06/code-execution-via-yaml-in-js-yaml-nodejs-module
ExploitVendor Advisory