Server-Side Request Forgery Vulnerability in vas3k TaxHacker by vas3k
CVE-2026-94040

6.9MEDIUM

Key Information:

Vendor

Vas3k

Status
Taxhacker
Vendor
CVE Published:
20 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-94040?

A security flaw exists in the vas3k TaxHacker application, specifically within the function testLLMProviderAction in the actions.ts file. This vulnerability allows an attacker to manipulate the argument values for provider, apiKey, model, or baseUrl, potentially leading to unauthorized server-side requests. Such an attack can be executed remotely, posing significant risks to the integrity and confidentiality of the affected server. The issue has been acknowledged by project maintainers, but no remediation has been provided as of yet.

Affected Version(s)

TaxHacker 0.8.0

TaxHacker 0.8.1

TaxHacker 0.8.2

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-2026-94040 - Proof of Concept

References

https://vuldb.com/vuln/407969
vdb-entrytechnical-description
https://vuldb.com/vuln/407969/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-94040
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
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

CAPT (VulDB User)
VulDB CNA Team
.