CVE-2023-34212Network attack vector

Untrusted deserialization via unrestricted JNDI URLs

Published Jun 12, 2023 · Updated Feb 13, 2025

Deserialization in Apache NiFi 1.8.0 through 1.21.0 allows remote authenticated users to load untrusted data through JMS configuration. JndiJmsConnectionFactoryProvider accepted configurable JNDI URL and library properties without restricting URL schemes, allowing JMS processors to retrieve and deserialize remote data. The path requires authorization to configure the affected components and permits attacker-controlled serialized data to reach the NiFi process.

CVSS severity6.5
Medium
EPSS probability2.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Deserialization in Apache NiFi 1.8.0 through 1.21.0 allows remote authenticated users to load untrusted data through JMS configuration. JndiJmsConnectionFactoryProvider accepted configurable JNDI URL and library properties without restricting URL schemes, allowing JMS processors to retrieve and deserialize remote data. The path requires authorization to configure the affected components and permits attacker-controlled serialized data to reach the NiFi process.

The record

CVE
CVE-2023-34212
Published
Jun 12, 2023
Updated
Feb 13, 2025
Vendor
The Apache Software Foundation
Product
Apache NiFi
Classifications
CWE-502, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.8.0 <=1.21.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache NiFiversion=1.8.0 <=1.21.0

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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