VULNERABILITY INTELLIGENCE

CVE-2017-5636

CVSS score9.8 CRITICAL

EPSS probability3.60%

CISA KEVNot currently listed

Published2017-10-19

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

In Apache NiFi before 0.7.2 and 1.x before 1.1.2 in a cluster environment, the proxy chain serialization/deserialization is vulnerable to an injection attack where a carefully crafted username could impersonate another user and gain their permissions on a replicated request to another node.

Weakness classification

CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Primary references

security@apache.org — Third Party Advisory, VDB Entry
security@apache.org — Issue Tracking, Mitigation, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Mitigation, Vendor Advisory