Pluck
CVE-2021-31746
CRITICAL
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V5 - File Handling Path canonicalization, traversal prevention
MITRE ATT&CK
2 techniques across 2 tactics: Discovery, Collection The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. |
| Exploit ScenarioDerived | A remote attacker could access files and directories outside the intended path by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
Zip Slip vulnerability in Pluck-CMS Pluck 4.7.15 allows an attacker to upload specially crafted zip files, resulting in directory traversal and potentially arbitrary code execution. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, 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. Validate and canonicalize file paths. Use chroot or sandboxing. Reject input containing path separators or '../' sequences.
Affects your stack
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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 as Path Traversal (CWE-22), which allows attackers to access files and directories outside the intended path. Zip Slip vulnerability in Pluck-CMS Pluck 4.7.15 allows an attacker to upload specially crafted zip files, resulting in directory traversal and potentially arbitrary code execution. Affected products include: Pluck-Cms Pluck.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
Zip Slip vulnerability in Pluck-CMS Pluck 4.7.15 allows an attacker to upload specially crafted zip files, resulting in directory traversal and potentially arbitrary code execution.
Threat Intelligence Overview
NVD
CVE.org
EPSS
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.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Path traversal exploits occur when applications use user-controlled input to construct file system paths without proper validation.
Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.
Affected Products (CPE)NVD
Pluck CMS 4.7.2 allows remote attackers to execute arbitrary code via the blog form feature. Rated critical severity (CV
Pluck CMS 4.7.18 does not restrict failed login attempts, allowing attackers to execute a brute force attack. Rated crit
data/inc/files.php in Pluck 4.7.8 allows remote attackers to execute arbitrary code by uploading a .htaccess file that s
An issue was discovered in Pluck before 4.7.7-dev2. Rated critical severity (CVSS 9.8), this vulnerability is remotely e
An arbitrary file upload vulnerability in the component /inc/modules_install.php of Pluck-CMS v4.7.18 allows attackers t
A Cross-Site Request Forgery (CSRF) in Pluck CMS v4.7.15 allows attackers to change the password of any given user by ex
An issue was discovered in Pluck CMS 4.7.10-dev2 and 4.7.11. Rated high severity (CVSS 8.8), this vulnerability is remot
Pluck v4.7.7 allows CSRF via admin.php?action=settings. Rated high severity (CVSS 8.8), this vulnerability is remotely e
In Pluck-4.7.15 admin background a remote command execution vulnerability exists when uploading files. Rated high severi
Session Fixation vulnerability in login.php in Pluck-CMS Pluck 4.7.15 allows an attacker to sustain unauthorized access
In Pluck 4.7.16, an admin user can use the theme upload functionality at /admin.php?action=themeinstall to perform remot
A file upload restriction bypass vulnerability in Pluck CMS before 4.7.13 allows an admin privileged user to gain access
Exploit-DB