CVE-2013-4660
The JS-YAML module before 2.0.5 for Node.js parses input without properly considering the unsafe !!js/function tag, which allows remote…
- 6.8MediumCVSS base score
- 17.2%Exploitation in 30 daysEPSS · top 2.9% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 2Public exploitsMetasploit, Nuclei and Exploit-DB
Description
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Metasploit module and an Exploit-DB entry for it.
Show the exploits2
Metasploit modules1 module
- Nodejs js-yaml load() Code Execution (Metasploit module) (opens in a new tab)
exploit/multi/fileformat/nodejs_js_yaml_load_code_execRank excellentdisclosed 28 Jun 2013
Exploit-DB1 entry
- Nodejs - 'js-yaml load()' Code Exec (Metasploit) (Exploit-DB entry) (opens in a new tab)
EDB-ID 28655local, multiplepublished 30 Sept 2013Verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 4 days later
· 4 days later
Published
- 11 years later
· 11 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 17.2% · top 2.9% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Affected products
n/a
- affected n/a
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npmjs-yamlGHSA-xxvw-45rp-3mj2 (opens in a new tab)
References
2
- https://nealpoole.com/blog/2013/06/code-execution-via-yaml-in-js-yaml-nodejs-module/ (opens in a new tab)x_refsource_MISCx_transferred
- http://portal.nodesecurity.io/advisories/js-yaml (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2017-0338 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-xxvw-45rp-3mj2 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2013-4660)Record last updated .