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CVE-2019-12421

Apache NiFi user log out issue

8.8 HighFix available

CVE-2019-12421 is a high vulnerability (CVSS 8.8) in Apache Nifi, published November 19, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.85%, the 79th percentile. Fixed in org.apache.nifi:nifi-web-security 1.10.0.

What does this mean?
Severity
8.8 HighCVSS 3.1, NVD
Exploit chance
1.85%EPSS, 79th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
1.10.0org.apache.nifi:nifi-web-security +3 more

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

1.85%Unchanged since Apr 14, 2021
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
org.apache.nifi:nifi-web-security
Maven
1.3.0 up to 1.10.0
1.10.0
org.apache.nifi:nifi-web-api
Maven
1.3.0 up to 1.10.0
1.10.0
org.apache.nifi:nifi-web-security
Maven
1.3.0 up to 1.10.0, plus listed versions
1.4.01.5.01.6.01.7.01.7.1
Show 4 moreShow less
1.8.01.9.01.9.11.9.2
1.10.0
org.apache.nifi:nifi-web-api
Maven
1.3.0 up to 1.10.0, plus listed versions
1.4.01.5.01.6.01.7.01.7.1
Show 4 moreShow less
1.8.01.9.01.9.11.9.2
1.10.0

What each source reports

NVD Score used8.8

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.

Record
CVE-2019-12421
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
6.5 MediumAV:N/AC:L/Au:S/C:P/I:P/A:P
Weakness
CWE-613
Updated
2026-11-02
CVE ListNo score

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.

Record
CVE-2019-12421
Updated
2026-11-02
EUVDEUVD-2019-0789No score

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.

Record
EUVD-2019-0789
Updated
2026-11-03
GitHub AdvisoriesGHSA-fmqw-vqh5-cwq98.8

Apache NiFi user log out issue

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.

Record
GHSA-fmqw-vqh5-cwq9
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-613
Updated
2026-11-02
OSV8.8

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.

Record
CVE-2019-12421
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-fmqw-vqh5-cwq98.8

Apache NiFi user log out issue

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.

Record
GHSA-fmqw-vqh5-cwq9
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-613
Updated
2026-11-02

History

History
RecordedChangedSources
facts
aliases, productsEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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