CVE-2023-37579Network attack vector

Credential disclosure via unchecked configuration retrieval

Published Jul 12, 2023 · Updated Oct 8, 2024

Incorrect authorization in Apache Pulsar Function Worker before 2.10.4 and 2.11.0 allows remote authenticated users to read connector configs. The source and sink configuration retrieval endpoints return another tenant's configuration without verifying the caller's tenant authorization. Exploitation requires a valid account and a guessed source or sink name, and exposed configurations can disclose stored credentials.

CVSS severity8.2
High
EPSS probability0.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Apache Pulsar Function Worker before 2.10.4 and 2.11.0 allows remote authenticated users to read connector configs. The source and sink configuration retrieval endpoints return another tenant's configuration without verifying the caller's tenant authorization. Exploitation requires a valid account and a guessed source or sink name, and exposed configurations can disclose stored credentials.

The record

CVE
CVE-2023-37579
Published
Jul 12, 2023
Updated
Oct 8, 2024
Vendor
The Apache Software Foundation
Product
Apache Pulsar Function Worker
Classifications
CWE-863, T1552
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 8, 2024Record 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=0 <2.10.4
  2. Affected versionversion=2.11.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Pulsar Function Workerversion=0 <2.10.4; version=2.11.0
The Apache Software Foundation · Apache Pulsarversion=0 <2.10.4; version=2.11.0

Published CVSS scores

8.2Apache Software FoundationCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
6.5NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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.

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

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-863Incorrect Authorization
T1552Unsecured Credentials

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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