CVE-2019-12421

mediumpriority · track · 36EPSS 0.018 · 79 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.85% (79th) EPSS

CVSS 6.5 · medium

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–8.8

v2.06.5mediumAV:N/AC:L/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8 · impact 6.4

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-613USprimaryCWE-613US

affected products (4)

Products and version ranges known to be affected.

n/a Apache NiFi≤ Apache NiFi 1.0.0 to 1.10.0enisa_euvdEU
apache nifi1.0.0 → 1.9.2nvdUScpe:2.3:a:apache:nifi:*:*:*:*:*:*:*:*
Maven org.apache.nifi:nifi-web-api1.3.0 → 1.10.0osvUSpkg:maven/org.apache.nifi/nifi-web-api
Maven org.apache.nifi:nifi-web-security1.3.0 → 1.10.0osvUSpkg:maven/org.apache.nifi/nifi-web-security

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-fmqw-vqh5-cwq9Apache NiFi user log out issue2019-12-02ghsa · osvUS
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.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2019-11-19modified 2026-06-17

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+728 more

references (6)

External citations — patches, advisories, analysis.

scry

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