CVE-2023-40037

MEDIUM

Apache NiFi 1.21.0-1.23.0 - Authenticated Connection URL Validation Bypass via Custom Input Formatting

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2023-40037. PoCs published by mbadanoiu.

AI-analyzed exploit summary The repository lacks actual exploit code and instead redirects to an external PDF for details, which is a common tactic for suspicious repositories. The README provides minimal technical information about the vulnerability.

Description

Apache NiFi 1.21.0 through 1.23.0 support JDBC and JNDI JMS access in several Processors and Controller Services with connection URL validation that does not provide sufficient protection against crafted inputs. An authenticated and authorized user can bypass connection URL validation using custom input formatting. The resolution enhances connection URL validation and introduces validation for additional related properties. Upgrading to Apache NiFi 1.23.1 is the recommended mitigation.

Exploits (1)

nomisec SUSPICIOUS
by mbadanoiu · poc
https://github.com/mbadanoiu/CVE-2023-40037

The repository lacks actual exploit code and instead redirects to an external PDF for details, which is a common tactic for suspicious repositories. The README provides minimal technical information about the vulnerability.

Classification
Suspicious 90%
Attack Type
Other
Complexity
Theoretical
Reliability
Theoretical
Target: Apache NiFi 1.21.0 through 1.23.0
Auth required
Prerequisites: Valid user credentials
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (3)

Core 3
Core References
Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2023/08/18/2

Scores

CVSS v3 6.5
EPSS 0.0126
EPSS Percentile 79.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-184 CWE-697
Status published
Products (5)
apache/nifi 1.21.0 - 1.23.1
org.apache.nifi/nifi-dbcp-base 1.21.0 - 1.23.1Maven
org.apache.nifi/nifi-dbcp-service-api 1.21.0 - 1.23.1Maven
org.apache.nifi/nifi-dbcp-service-bundle 1.21.0 - 1.23.1Maven
org.apache.nifi/nifi-jms-processors 1.21.0 - 1.23.1Maven
Published Aug 18, 2023
Tracked Since Feb 18, 2026