CVE-2023-30450Network attack vector

Broker RPC TLS disablement via array coercion

Published Apr 8, 2023 · Updated Feb 12, 2025

Improper configuration handling in Redpanda before 23.1.2 allows attackers to leave broker RPC traffic without TLS. The rpk YAML decoder coerces redpanda.rpc_server_tls into an array-backed field and writes that representation back, although brokers read the setting as an object. The condition requires rpk to process a configuration containing the field; affected clusters can retain unencrypted broker RPC until an offline configuration repair.

CVSS severity4.3
Medium
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper configuration handling in Redpanda before 23.1.2 allows attackers to leave broker RPC traffic without TLS. The rpk YAML decoder coerces redpanda.rpc_server_tls into an array-backed field and writes that representation back, although brokers read the setting as an object. The condition requires rpk to process a configuration containing the field; affected clusters can retain unencrypted broker RPC until an offline configuration repair.

The record

CVE
CVE-2023-30450
Published
Apr 8, 2023
Updated
Feb 12, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.3CISACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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