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Cyberpanel CVE-2021-47949

| EUVDEUVD-2021-34809 HIGH
Improper Link Resolution Before File Access (CWE-59)
2026-05-10 VulnCheck GHSA-47jc-h939-7pj5
8.7
CVSS 4.0 · Vendor: VulnCheck
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V5 - File Handling Symlink resolution safety
Impact

CVSS score of 8.7 (HIGH). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.10%.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAI

CyberPanel 2.1 contains a command execution vulnerability that allows authenticated attackers to read arbitrary files and execute remote code by exploiting symlink attacks through the filemanager. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affected VersionsENISA

CyberPanel ≤ 2.1

Affected Packages

euvd cyberpanel no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-59. CyberPanel 2.1 contains a command execution vulnerability that allows authenticated attackers to read arbitrary files and execute remote code by exploiting symlink attacks through the filemanager controller endpoint. Attackers can manipulate the completeStartingPath parameter in POST requests to /filemanager/controller to create symbolic links, read sensitive files like database credentials, and execute arbitrary shell commands through the /websites/fetchFolderDetails endpoint. Affected products include: Cyberpanel.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (VulnCheck) PRIMARY 8.7 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck) · only source for this CVE.

CVSS VectorVendor: VulnCheck

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vulnerable system: Confidentiality
High
Vulnerable system: Integrity
High
Vulnerable system: Availability
High
Subsequent system: Confidentiality
None
Subsequent system: Integrity
None
Subsequent system: Availability
None

Lifecycle Timeline

2
CVSS changed
May 10, 2026 - 13:22 NVD
8.8 (HIGH) 8.7 (HIGH)
CVE Published
May 10, 2026 - 12:52 cve.org
HIGH 8.7

DescriptionCVE.org

CyberPanel 2.1 contains a command execution vulnerability that allows authenticated attackers to read arbitrary files and execute remote code by exploiting symlink attacks through the filemanager controller endpoint. Attackers can manipulate the completeStartingPath parameter in POST requests to /filemanager/controller to create symbolic links, read sensitive files like database credentials, and execute arbitrary shell commands through the /websites/fetchFolderDetails endpoint.

Threat Intelligence Overview

EPSS Score
0.1%
Top 72% exploitable
Exploit
POC
Public exploit code exists
Data Quality
7 sources
Confidence: High
EUVD NVD CVE.org EPSS Vulnrichment Exploit-DB GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC Yes
EPSS 0.1%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
Poc
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Total

Priority Score

64
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +44
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

CVE-2024-51378 CRITICAL POC
9.8 Oct 29

getresetstatus in dns/views.py and ftp/views.py in CyberPanel (aka Cyber Panel) before 1c0c6cb allows remote attackers t

CVE-2024-51567 CRITICAL POC
9.8 Oct 29

upgrademysqlstatus in databases/views.py in CyberPanel (aka Cyber Panel) before 5b08cd6 allows remote attackers to bypas

CVE-2024-51568 CRITICAL POC
9.8 Oct 29

CyberPanel (aka Cyber Panel) before 2.3.5 allows Command Injection via completePath in the ProcessUtilities.outputExecut

CVE-2026-71966 HIGH POC
8.7 Aug 10

Command injection in CyberPanel 2.4.3's remote backup transfer feature allows authenticated low-privileged users to exec

CVE-2026-41473 HIGH POC
8.8 Apr 24

Unauthenticated database writes in CyberPanel versions before 2.4.4 allow remote attackers to abuse two AI Scanner worke

CVE-2024-53376 HIGH POC
8.8 Dec 16

CyberPanel before 2.3.8 allows remote authenticated users to execute arbitrary commands via shell metacharacters in the

CVE-2019-13056 HIGH POC
8.8 Jul 02

An issue was discovered in CyberPanel through 1.8.4. Rated high severity (CVSS 8.8), this vulnerability is remotely expl

CVE-2026-71965 HIGH POC
8.7 Aug 10

Authenticated remote code execution in CyberPanel 2.4.3 allows any logged-in user to escalate to persistent root-level S

CVE-2026-71964 HIGH POC
7.1 Aug 10

Arbitrary file read in CyberPanel 2.4.3's file manager allows authenticated panel users to escape their home-directory s

CVE-2026-87820 MEDIUM POC
6.9 Sep 09

CyberPanel versions 2.4.3 through 2.4.5 expose unauthenticated AI Scanner callback and status-update endpoints that retu

CVE-2024-54679 MEDIUM POC
6.5 Dec 05

CyberPanel (aka Cyber Panel) before 6778ad1 does not require the FilemanagerAdmin capability for restartMySQL actions. R

CVE-2026-41472 MEDIUM POC
5.3 Apr 24

Stored cross-site scripting in CyberPanel's AI Scanner dashboard chains to unauthenticated remote code execution on vers

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