VULNERABILITY INTELLIGENCE

CVE-2018-8778

CVSS score7.5 HIGH
EPSS probability7.53%
CISA KEVNot currently listed
Published2018-04-03
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Description

In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an attacker controlling the unpacking format (similar to format string vulnerabilities) can trigger a buffer under-read in the String#unpack method, resulting in a massive and controlled information disclosure.

Weakness classification

  • CWE-134: Use of Externally-Controlled Format String

Primary references