CVE-2022-34321Network attack vector

Information disclosure and DoS via unauthenticated proxy statistics

Published Mar 12, 2024 · Updated Feb 13, 2025

Improper authentication in affected Apache Pulsar Proxy releases allows remote attackers to access /proxy-stats without credentials. The endpoint omits an authentication check before returning live-connection statistics and accepting logging-level changes. Reachability requires network access to the proxy, which is designed for a secured perimeter; successful requests disclose client IP addresses and can raise logging overhead enough to interrupt service.

CVSS severity8.2
High
EPSS probability1.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in affected Apache Pulsar Proxy releases allows remote attackers to access /proxy-stats without credentials. The endpoint omits an authentication check before returning live-connection statistics and accepting logging-level changes. Reachability requires network access to the proxy, which is designed for a secured perimeter; successful requests disclose client IP addresses and can raise logging overhead enough to interrupt service.

The record

CVE
CVE-2022-34321
Published
Mar 12, 2024
Updated
Feb 13, 2025
Vendor
The Apache Software Foundation
Product
Apache Pulsar
Classifications
CWE-306, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 12, 2024CVE 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=2.11.0 <2.11.3
  2. Affected versionversion=2.6.0 <2.10.6
  3. Affected versionversion=3.0.0 <3.0.2
  4. Affected versionversion=3.1.0 <3.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Pulsarversion=2.11.0 <2.11.3; version=2.6.0 <2.10.6; version=3.0.0 <3.0.2; version=3.1.0 <3.1.1

Published CVSS scores

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

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-306Missing Authentication for Critical Function
T1499.004Application or System Exploitation

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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