Server-Side Request Forgery in ZenTao Webhook Module
CVE-2026-1884

5.1MEDIUM

Key Information:

Vendor

ZenTao

Status
Zentao
Vendor
CVE Published:
4 February 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-1884?

A vulnerability has been found in ZenTao affecting versions up to 21.7.6-85642. The issue lies in the fetchHook function within the Webhook Module's model.php file. This weakness can lead to server-side request forgery, allowing attackers to initiate unauthorized requests remotely. Exploits have been made publicly available, posing a significant risk to affected systems. Despite early notification, the vendor has not responded to address the issue.

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Affected Version(s)

ZenTao 21.7.6-85642

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-2026-1884 - Proof of Concept

References

https://vuldb.com/?id.344264
vdb-entrytechnical-description
https://vuldb.com/?ctiid.344264
signaturepermissions-required
https://vuldb.com/?submit.742633
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
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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