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CVE-2026-34367— InvoiceShelf: SSRF in Invoice PDF Rendering via Unsanitised HTML in Notes Field

Quick assessment

Affected
InvoiceShelf InvoiceShelf
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

InvoiceShelf是InvoiceShelf开源的一个开源的发票与费用管理应用。 InvoiceShelf 2.2.0之前版本存在代码问题漏洞，该漏洞源于发票PDF生成模块中用户提供的HTML未经清理，可能导致服务端请求伪造攻击。

CVSS 7.6 · High EPSS 0.39% · P31

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-34367

Vulnerability Information
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Vulnerability Title
InvoiceShelf: SSRF in Invoice PDF Rendering via Unsanitised HTML in Notes Field
Source: CVE Program / CVE List V5
Vulnerability Description
InvoiceShelf is an open-source web & mobile app that helps track expenses, payments and create professional invoices and estimates. Prior to version 2.2.0, a Server-Side Request Forgery (SSRF) vulnerability exists in the Invoice PDF generation module. User-supplied HTML in the invoice Notes field is passed unsanitised to the Dompdf rendering library, which will fetch any remote resources referenced in the markup. This can be triggered via the PDF preview and email delivery endpoints. This issue has been patched in version 2.2.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
InvoiceShelf 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
InvoiceShelf是InvoiceShelf开源的一个开源的发票与费用管理应用。 InvoiceShelf 2.2.0之前版本存在代码问题漏洞，该漏洞源于发票PDF生成模块中用户提供的HTML未经清理，可能导致服务端请求伪造攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
InvoiceShelf InvoiceShelf < 2.2.0 -

II. Public POCs for CVE-2026-34367

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7719 chars
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III. Intelligence Information for CVE-2026-34367

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Vendor Advisories for CVE-2026-34367 (1)

Same Patch Batch · InvoiceShelf · 2026-03-31 · 3 CVEs total

CVE-2026-34365 7.6 HIGH InvoiceShelf: SSRF in Estimate PDF Rendering via Unsanitised HTML in Notes Field
CVE-2026-34366 7.6 HIGH InvoiceShelf: SSRF in Payment Receipt PDF Rendering via Unsanitised HTML in Notes Field

IV. Related Vulnerabilities

Same product: InvoiceShelf
Same vendor: InvoiceShelf
Same weakness: CWE-918

V. Comments for CVE-2026-34367

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