Raw vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2023-34468 is a high-severity Code Injection (CWE-94) vulnerability in Apache Nifi. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Junk Data (T1001.001); ranked in the top 0.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
The vulnerability is a code injection flaw, tracked as CWE-94, that affects the DBCPConnectionPool and HikariCPConnectionPool Controller Services in Apache NiFi versions 0.0.2 through 1.21.0. An authenticated user who is authorized to configure these services can supply a Database URL that references the H2 JDBC driver, which in turn permits execution of custom code on the NiFi instance.
An attacker with the required NiFi privileges can exploit the issue over the network to achieve remote code execution, resulting in full compromise of confidentiality, integrity, and availability on the affected system. The CVSS 3.1 base score of 8.8 reflects the low attack complexity and lack of required user interaction once the malicious controller service configuration is applied.
Apache NiFi security advisories and the project’s resolution state that the fix validates the supplied Database URL and explicitly rejects H2 JDBC locations. Users are advised to upgrade to version 1.22.0 or later; the same change is documented in the Apache NiFi security page and the associated oss-security mailing list posting.
Public references include a Packet Storm exploit archive entry and a detailed analysis from Cyfirma, indicating that working proof-of-concept material has been published. The EPSS score has remained near its peak value of 0.7837.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-1917
Vulnerability Data
The DBCPConnectionPool and HikariCPConnectionPool Controller Services in Apache NiFi 0.0.2 through 1.21.0 allow an authenticated and authorized user to configure a Database URL with the H2 driver that enables custom code execution. The resolution validates the Database URL and rejects…
more
H2 JDBC locations. You are recommended to upgrade to version 1.22.0 or later which fixes this issue.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V1.3.1
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Makes persistent code injection into loaded programs impossible when the executable image itself resides on hardware-protected read-only media.
Dynamically generated code can be produced and executed inside the isolated chamber, preventing host compromise from code-injection payloads.
Validates inputs used in dynamic code generation to block injected directives.
Directly prevents execution of attacker-supplied code written into data memory regions.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
PR.PS-06's SDLC practices directly target injection flaws via secure coding and testing (mostly), yet as a single broad outcome it leaves many code-generation specifics unaddressed (partial).
PR.DS-10 protects runtime data confidentiality/integrity but has no bearing on neutralizing externally influenced input during code generation, so neither direction shows any preventive effect.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.