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Case File

CVE-2016-2338

CRITICAL · CVSS 9.8 EPSS 4.64% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2022-09-29 · Last synced 2026-08-04

Field Assessment

AI analysis pending.

Exhibit — Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2016-2338
Severity
CRITICAL
CVSS
9.8
EPSS
4.64%

Original Filing — NVD 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.