CVE-2026-94039: Server-Side Request Forgery in vas3k TaxHacker
CVE-2026-94039 is a server-side request forgery (SSRF) vulnerability in vas3k TaxHacker affecting versions 0.8.0 through 0.8.5. The flaw exists in the generateInvoicePDF function of the Invoice PDF Renderer component, where manipulation of the businessLogo argument can trigger SSRF. The vulnerability can be exploited remotely. Although the issue was reported early, the project has not yet responded. A patch is available, and the service is cloud-hosted, meaning the vendor manages remediation. The CVSS 4.0 score is 6.9, indicating medium severity.
AI Analysis
Technical Summary
The vulnerability CVE-2026-94039 affects vas3k TaxHacker versions 0.8.0 to 0.8.5 in the generateInvoicePDF function located in /apps/invoices/actions.ts. By manipulating the businessLogo argument, an attacker can cause server-side request forgery, potentially making the server perform unintended HTTP requests. The vulnerability is remotely exploitable. The project was notified early but has not responded. The vulnerability has a CVSS 4.0 base score of 6.9 (medium severity). The product is a cloud service, and a patch is available though no direct patch links are provided.
Potential Impact
Successful exploitation allows an attacker to perform SSRF attacks via the businessLogo parameter in the invoice PDF generation process. This can lead to unauthorized internal or external network requests initiated by the server, potentially exposing internal resources or enabling further attacks. The vulnerability is remotely exploitable without authentication. No known active exploitation in the wild has been reported yet.
Mitigation Recommendations
A patch is available for this vulnerability. Since TaxHacker is a cloud-hosted service, the vendor manages remediation server-side. Users should verify with the vendor advisory that their instance has been updated. No additional mitigation steps are indicated by the vendor at this time.
CVE-2026-94039: Server-Side Request Forgery in vas3k TaxHacker
Description
CVE-2026-94039 is a server-side request forgery (SSRF) vulnerability in vas3k TaxHacker affecting versions 0.8.0 through 0.8.5. The flaw exists in the generateInvoicePDF function of the Invoice PDF Renderer component, where manipulation of the businessLogo argument can trigger SSRF. The vulnerability can be exploited remotely. Although the issue was reported early, the project has not yet responded. A patch is available, and the service is cloud-hosted, meaning the vendor manages remediation. The CVSS 4.0 score is 6.9, indicating medium severity.
CVSS v4.0
Score 6.9medium
Affected software
vas3k
TaxHacker
pkg:github/vas3k/TaxHackercpe:2.3:a:vas3k:taxhacker:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-94039 affects vas3k TaxHacker versions 0.8.0 to 0.8.5 in the generateInvoicePDF function located in /apps/invoices/actions.ts. By manipulating the businessLogo argument, an attacker can cause server-side request forgery, potentially making the server perform unintended HTTP requests. The vulnerability is remotely exploitable. The project was notified early but has not responded. The vulnerability has a CVSS 4.0 base score of 6.9 (medium severity). The product is a cloud service, and a patch is available though no direct patch links are provided.
Potential Impact
Successful exploitation allows an attacker to perform SSRF attacks via the businessLogo parameter in the invoice PDF generation process. This can lead to unauthorized internal or external network requests initiated by the server, potentially exposing internal resources or enabling further attacks. The vulnerability is remotely exploitable without authentication. No known active exploitation in the wild has been reported yet.
Mitigation Recommendations
A patch is available for this vulnerability. Since TaxHacker is a cloud-hosted service, the vendor manages remediation server-side. Users should verify with the vendor advisory that their instance has been updated. No additional mitigation steps are indicated by the vendor at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-09-19T21:04:34.756Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Is Cloud Service
- true
Threat ID: 6ab00e1655bf5e2cf5459090
Added to database: 09/20/2026, 16:47:18 UTC
Last enriched: 09/20/2026, 17:01:36 UTC
Last updated: 09/20/2026, 17:01:36 UTC
Views: 5
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