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

CVSS 7.6 · High EPSS 0.04% · P11
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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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
服务端请求伪造(SSRF)
Source: NVD (National Vulnerability Database)
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

VendorProductAffected VersionsCPESubscribe
InvoiceShelfInvoiceShelf < 2.2.0 -

II. Public POCs for CVE-2026-34367

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 7659 chars
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III. Intelligence Information for CVE-2026-34367

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

CVE-2026-343657.6 HIGHInvoiceShelf: SSRF in Estimate PDF Rendering via Unsanitised HTML in Notes Field
CVE-2026-343667.6 HIGHInvoiceShelf: 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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