What is CVE-2022-26850?

CVE-2022-26850 is a medium-severity vulnerability in Apache Nifi, classified under Exposure of Resource to Wrong Sphere. CVSS score: 4.3/10. Published 2022-04-06.

How severe is CVE-2022-26850?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Is CVE-2022-26850 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Apache Nifi

CVE-2022-26850

When creating or updating credentials for single-user access, Apache NiFi wrote a copy of the Login Identity Providers configuration to the operating system temporary directory. On most platforms, the operating system temporary directory has global read permissions. NiFi immediately moved the temporary file to the final configuration directory, which significantly limited the window of opportunity for access. NiFi 1.16.0 includes updates to replace the Login Identity Providers configuration without writing a file to the operating system temporary directory.

EPSS: 0.014 (70.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Apache Nifi
Apache Software Foundation Nifi — versions NiFi 1.14.0 to 1.15.3

Weakness classification (CWE)

CWE-668 — Exposure of Resource to Wrong Sphere

Public proof-of-concept exploits

References

security@apache.org (x_refsource_MISC, Vendor Advisory)
security@apache.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2022-26850?: CVE-2022-26850 is a medium-severity vulnerability in Apache Nifi, classified under Exposure of Resource to Wrong Sphere. CVSS score: 4.3/10. Published 2022-04-06.
How severe is CVE-2022-26850?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2022-26850 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.