Critical severity · published May 23, 2018
CVE-2018-1309
Apache NiFi External XML Entity issue in SplitXML processor
9.8
CVSS
4.5%
EPSS
No
On KEV
Description
Apache NiFi External XML Entity issue in SplitXML processor. Malicious XML content could cause information disclosure or remote code execution. The fix to disable external general entity parsing and disallow doctype declarations was applied on the Apache NiFi 1.6.0 release. Users running a prior 1.x release should upgrade to the appropriate release.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.5% · higher than 91% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NI
Nifi · Apache
before 1.6.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-1309
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-1309
Patch
https://nifi.apache.org/security.html#CVE-2018-1309
More from Nifi
9.8
CVE-2026-68979
Apache NiFi: Missing Authorization for Components Referenced by Parameter Context Updates
9.8
CVE-2017-15697
A malicious X-ProxyContextPath or X-Forwarded-Context header containing external resources or embedded code could cause remote code execution
9.8
CVE-2017-5636
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…
9.1
CVE-2026-68980
Apache NiFi: Authorization Bypass for Parameter Context Asset Deletion
8.8
CVE-2026-39816
Apache NiFi: Missing Execute Code Required Permission on TinkerpopClientService