CVE-2023-50976Network attack vector

Unauthorized transaction changes via missing handler checks

Published Dec 17, 2023 · Updated May 20, 2025

Missing authorization in Redpanda before 23.1.21 and 23.2.x before 23.2.18 allows remote attackers to alter transactions. The end_txn, add_offsets_to_txn, add_partitions_to_txn, and txn_offset_commit handlers process requests without checking ACL permissions. Network access to a broker is sufficient to commit or abort transactions and change their associated partitions or offsets without authorization.

CVSS severity9.8
Critical
EPSS probability0.99%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Redpanda before 23.1.21 and 23.2.x before 23.2.18 allows remote attackers to alter transactions. The end_txn, add_offsets_to_txn, add_partitions_to_txn, and txn_offset_commit handlers process requests without checking ACL permissions. Network access to a broker is sufficient to commit or abort transactions and change their associated partitions or offsets without authorization.

The record

CVE
CVE-2023-50976
Published
Dec 17, 2023
Updated
May 20, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-862, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 17, 2023CVE publishedPublication date reported by the CVE source.
  2. May 20, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1190Exploit Public-Facing Application

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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