CVE-2020-13940
Improper Restriction of XML External Entity Reference in Apache NiFi
5.5
MEDIUM
CVSS 3.1
EPSS 0.96%
Description
In Apache NiFi 1.0.0 to 1.11.4, the notification service manager and various policy authorizer and user group provider objects allowed trusted administrators to inadvertently configure a potentially malicious XML file. The XML file has the ability to make external calls to services (via XXE).
How to fix CVE-2020-13940
To remediate CVE-2020-13940, upgrade the affected package to a fixed version below.
- —no fix listed
- —upgrade to 1.12.0-RC1 or later
Is CVE-2020-13940 being exploited?
Low — EPSS is 1.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- >= 1.0.0, <= 1.11.4
- >= 1.0.0, < 1.12.0-RC1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N |