VULNERABILITY INTELLIGENCE

CVE-2017-6920

CVSS score9.8 CRITICAL

EPSS probability20.24%

CISA KEVNot currently listed

Published2018-08-06

Last modified2026-06-17

CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

Drupal core 8 before versions 8.3.4 allows remote attackers to execute arbitrary code due to the PECL YAML parser not handling PHP objects safely during certain operations.

Primary references

mlhess@drupal.org — Third Party Advisory, VDB Entry
mlhess@drupal.org — Third Party Advisory, VDB Entry
mlhess@drupal.org — Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory