---
title: "CVE-2026-94039: vas3k TaxHacker - Server-Side Request Forgery"
description: "vas3k TaxHacker <= 0.8.5 contains a server-side request forgery caused by manipulation of the \"businessLogo\" argument in generateInvoicePDF function of Invoice PDF Renderer, letting remote attackers make arbitrary requests, exploit requires no special privileges."
url: https://panop.io/threat-heartbeat/CVE-2026-94039/
---

# CVE-2026-94039 vas3k TaxHacker - Server-Side Request Forgery

vas3k TaxHacker <= 0.8.5 contains a server-side request forgery caused by manipulation of the "businessLogo" argument in generateInvoicePDF function of Invoice PDF Renderer, letting remote attackers make arbitrary requests, exploit requires no special privileges.

CVSS base score 7.3 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.50% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-94039)

## Details

Type

Server-Side Request Forgery

Impact

Server Side Request Forgery

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Published

20 September 2026

Updated

15 October 2026

Weakness

[CWE-918](https://cwe.mitre.org/data/definitions/918.html)

## Vendor fix

Update to the latest version when available.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-94039](https://nvd.nist.gov/vuln/detail/CVE-2026-94039)
- [https://github.com/vas3k/TaxHacker/](https://github.com/vas3k/TaxHacker/)
- [https://github.com/vas3k/TaxHacker/issues/186](https://github.com/vas3k/TaxHacker/issues/186)
- [https://vuldb.com/cve/CVE-2026-94039](https://vuldb.com/cve/CVE-2026-94039)
- [https://vuldb.com/submit/947878](https://vuldb.com/submit/947878)
- [https://vuldb.com/vuln/407968](https://vuldb.com/vuln/407968)
- [https://vuldb.com/vuln/407968/cti](https://vuldb.com/vuln/407968/cti)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)