Path Traversal Vulnerability in ZenTao Backup Handler
CVE-2026-2551

5.3MEDIUM

Key Information:

Vendor

ZenTao

Status
Zentao
Vendor
CVE Published:
16 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-2551?

A security flaw has been identified in ZenTao's Backup Handler, specifically within the delete function of the file editor/control.php. This vulnerability arises from improper handling of the 'fileName' argument, leading to path traversal issues. Attackers can exploit this vulnerability remotely to initiate unauthorized file deletions. Given that the exploit has been publicly disclosed, users of affected ZenTao versions should take immediate action to secure their installations.

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Affected Version(s)

ZenTao 21.7.0

ZenTao 21.7.1

ZenTao 21.7.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-2551 - Proof of Concept

References

https://vuldb.com/?id.346160
vdb-entrytechnical-description
https://vuldb.com/?ctiid.346160
signaturepermissions-required
https://vuldb.com/?submit.749983
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

ez-lbz (VulDB User)
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