CVE-2023-0391Public exploitNetwork attack vector

Administrative traffic disclosure via shared TLS private key

Published Mar 21, 2023 · Updated Feb 26, 2025

Hard-coded TLS keys in CloudPanel Community Edition 2.2.0 and earlier allow man-in-the-middle attackers to read administrative traffic. The installer deploys the same self-signed certificate and corresponding private key on every instance, so possession of any copy defeats confidentiality for captured HTTPS sessions. A privileged network position or previously captured traffic is required, after which administrator passwords and session tokens exposed through the interface can be recovered.

CVSS severity8.1
High
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hard-coded TLS keys in CloudPanel Community Edition 2.2.0 and earlier allow man-in-the-middle attackers to read administrative traffic. The installer deploys the same self-signed certificate and corresponding private key on every instance, so possession of any copy defeats confidentiality for captured HTTPS sessions. A privileged network position or previously captured traffic is required, after which administrator passwords and session tokens exposed through the interface can be recovered.

The record

CVE
CVE-2023-0391
Published
Mar 21, 2023
Updated
Feb 26, 2025
Vendor
CloudPanel
Product
CloudPanel Community Edition
Classifications
CWE-798, CWE-321, T1040
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 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?

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

  1. Affected versionversion=0 <=2.2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

CloudPanel · CloudPanel Community Editionversion=0 <=2.2.0

Published CVSS scores

8.1CISACVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1NVDCVSS:3.1/AV:N/AC:H/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 exploitPublished

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
CWE-321Use of Hard-coded Cryptographic Key
T1040Network Sniffing

Public exploit references

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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