| Title | invoiceninja Invoice Ninja 5.13.26 Server-Side Request Forgery |
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| Description | A Server-Side Request Forgery (SSRF) vulnerability exists in Invoice Ninja's PDF rendering pipeline due to insufficient validation of external URLs embedded within rich-text content.
The vulnerability stems from the application's hostname validation logic, which relies on string-based blacklist heuristics rather than resolving hostnames to their final IP addresses before allowing requests.
Because Invoice Ninja generates PDF documents server-side using a headless Chromium renderer, an attacker can embed references to attacker-controlled domains that later resolve to internal or restricted network addresses. During PDF generation, the server fetches these resources, resulting in server-side requests initiated from the application's infrastructure. |
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| Source | ⚠️ https://ashutosh-jena.in/blog/server-side-request-forgery-ssrf-in-invoice-ninja-pdf-rendering-v51326 |
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| User | MAVERICK-VF142 (UID 99541) |
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| Submission | 07/04/2026 11:57 (2 months ago) |
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| Moderation | 09/01/2026 00:52 (2 months later) |
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| Status | Accepted |
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| VulDB entry | 397500 [invoiceninja Invoice Ninja up to 5.13.26 invoices Endpoint Purify.php Purify::isHostSafe notes server-side request forgery] |
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| Points | 20 |
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