{"cve":"CVE-2016-2338","nvd":{"published":"2022-09-29T03:15:11.470","modified":"2026-06-17T00:43:51.027","status":"Modified","description":"An exploitable heap overflow vulnerability exists in the Psych::Emitter start_document function of Ruby. In Psych::Emitter start_document function heap buffer \"head\" allocation is made based on tags array length. Specially constructed object passed as element of tags array can increase this array size after mentioned allocation and cause heap overflow.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-787"],"references":["http://www.talosintelligence.com/reports/TALOS-2016-0032/","https://lists.debian.org/debian-lts-announce/2020/03/msg00032.html","https://security.netapp.com/advisory/ntap-20221228-0005/","http://www.talosintelligence.com/reports/TALOS-2016-0032/","https://lists.debian.org/debian-lts-announce/2020/03/msg00032.html"],"products":["debian:debian_linux","ruby-lang:ruby"],"source":"nvd","synced_at":"2026-10-19T21:36:05.460296998+00:00"},"epss":{"cve":"CVE-2016-2338","score":0.04741,"percentile":0.91866,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}