CVE-2019-12421 json
Apache NiFi user log out issue
published 2019-11-19 6 y ago modified 2026-06-17 4 mo ago also GHSA-fmqw-vqh5-cwq9 , EUVD-2019-0789
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.8%
- EPSS 1.8% chance of exploitation in 30 days, percentile 79%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- maven org.apache.nifi:nifi-web-security 1.10.0
- maven org.apache.nifi:nifi-web-api 1.10.0
- github.com/apache/nifi@cf6f517 commit
- github.com/apache/nifi#3362 pull request
Exploit prediction
1.85% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
| GitHub | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.apache.nifi:nifi-web-security | >=1.3.0, <1.10.0 |
1.10.0 |
| maven | org.apache.nifi:nifi-web-api | >=1.3.0, <1.10.0 |
1.10.0 |
Affected products
- n/a Apache NiFi
Classification
- Weakness
-
- CWE-613 DEPRECATED: Insufficient Session Expiration
References
-
github.com
/apache/nifi/pull/3362
web
-
github.com
/apache/nifi/commit/cf6f5172503ce438c6c22c334c9367f774db7b24
web
-
nifi.apache.org
/security.html#CVE-2019-12421
web, vendor-advisory
-
lists.apache.org
/thread.html/rca37935d661f4689cb4119f1b3b224413b22be161b678e6e6ce0c69b%40%3Ccommits.nifi.apache.org%3E
mailing-list
-
nvd.nist.gov
/vuln/detail/CVE-2019-12421
advisory
-
lists.apache.org
/thread.html/rca37935d661f4689cb4119f1b3b224413b22be161b678e6e6ce0c69b@%3Ccommits.nifi.apache.org%3E
web
Sources
- CVE List CVE-2019-12421
- GitHub Advisory GHSA-fmqw-vqh5-cwq9
- NVD CVE-2019-12421
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.