High severity · published Nov 19, 2019
CVE-2019-12421
When using an authentication mechanism other than PKI, when the user clicks Log Out in NiFi versions 1.0.0 to 1.9.2, NiFi invalidates the authentication token on the client side…
8.8
CVSS
1.8%
EPSS
No
On KEV
Description
When using an authentication mechanism other than PKI, when the user clicks Log Out in NiFi versions 1.0.0 to 1.9.2, NiFi invalidates the authentication token on the client side but not on the server side. This permits the user's client-side token to be used for up to 12 hours after logging out to make API requests to NiFi.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 79% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NI
Nifi · Apache
1.0.0 through 1.9.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-12421
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-12421
lists.apache.org
https://lists.apache.org/thread.html/rca37935d661f4689cb4119f1b3b224413b22be161b678e6e6ce0c69b%40%3Ccommits.nifi.apache.org%3E
Vendor Advisory
https://nifi.apache.org/security.html#CVE-2019-12421
More from Nifi
9.8
CVE-2026-68979
Apache NiFi: Missing Authorization for Components Referenced by Parameter Context Updates
9.8
CVE-2018-1309
Apache NiFi External XML Entity issue in SplitXML processor
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