VULNERABILITY INTELLIGENCE
CVE-2017-12623
CVSS score6.5 MEDIUM
EPSS probability1.94%
CISA KEVNot currently listed
Published2017-10-10
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Description
An authorized user could upload a template which contained malicious code and accessed sensitive files via an XML External Entity (XXE) attack. The fix to properly handle XML External Entities was applied on the Apache NiFi 1.4.0 release. Users running a prior 1.x release should upgrade to the appropriate release.
Weakness classification
- CWE-611: Improper Restriction of XML External Entity Reference
Primary references
- security@apache.org — Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Vendor Advisory