CVE-2023-34409Network attack vector

Unauthenticated privilege escalation via malformed URL normalization

Published Jun 6, 2023 · Updated Jan 8, 2025

Path traversal in Percona Monitoring and Management Server 2.0.0 through 2.37.0 allows remote attackers to bypass authentication. The authenticate function in auth_server.go strips dot- or slash-delimited URL segments until an unauthenticated-route rule matches, without canonicalizing the request path. A crafted POST to an unauthenticated API route can consequently reach protected APIs, disclose PMM logs, and escalate privileges without credentials.

CVSS severity9.8
Critical
EPSS probability1.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Percona Monitoring and Management Server 2.0.0 through 2.37.0 allows remote attackers to bypass authentication. The authenticate function in auth_server.go strips dot- or slash-delimited URL segments until an unauthenticated-route rule matches, without canonicalizing the request path. A crafted POST to an unauthenticated API route can consequently reach protected APIs, disclose PMM logs, and escalate privileges without credentials.

The record

CVE
CVE-2023-34409
Published
Jun 6, 2023
Updated
Jan 8, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 8, 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

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS: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-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
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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