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An owner can use PDF generation to reach internal services or cloud metadata endpoints, and a configured external host receives customer names, addresses, line items, totals, and company identifiers from subsequent PDF renders. 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This issue is fixed in version 2.4.0."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-10-14T19:25:32.410Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/InvoiceShelf/InvoiceShelf/security/advisories/GHSA-mfxg-qphw-3f3g","tags":["x_refsource_CONFIRM"],"url":"https://github.com/InvoiceShelf/InvoiceShelf/security/advisories/GHSA-mfxg-qphw-3f3g"},{"name":"https://github.com/InvoiceShelf/InvoiceShelf/pull/664","tags":["x_refsource_MISC"],"url":"https://github.com/InvoiceShelf/InvoiceShelf/pull/664"},{"name":"https://github.com/InvoiceShelf/InvoiceShelf/commit/d615cfb4ff4841a3b8cda7fc850a2bb335521fe5","tags":["x_refsource_MISC"],"url":"https://github.com/InvoiceShelf/InvoiceShelf/commit/d615cfb4ff4841a3b8cda7fc850a2bb335521fe5"},{"name":"https://github.com/InvoiceShelf/InvoiceShelf/releases/tag/2.4.0","tags":["x_refsource_MISC"],"url":"https://github.com/InvoiceShelf/InvoiceShelf/releases/tag/2.4.0"}],"source":{"advisory":"GHSA-mfxg-qphw-3f3g","discovery":"UNKNOWN"},"title":"InvoiceShelf: SSRF via unvalidated Gotenberg PDF renderer host in PDF configuration"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-55385","datePublished":"2026-10-14T19:25:32.410Z","dateReserved":"2026-06-16T18:57:40.182Z","dateUpdated":"2026-10-14T19:25:32.410Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-14 20:17:48","lastModifiedDate":"2026-10-15 21:08:49","problem_types":["CWE-918","CWE-918 CWE-918: Server-Side Request Forgery (SSRF)"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N","baseScore":6.8,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":2.3,"impactScore":4}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"55385","Ordinal":"1","Title":"InvoiceShelf: SSRF via unvalidated Gotenberg PDF renderer host i","CVE":"CVE-2026-55385","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"55385","Ordinal":"1","NoteData":"InvoiceShelf is an open-source web & mobile app that helps track expenses, payments and create professional invoices and estimates. Prior to version 2.4.0, InvoiceShelf's PDFConfigurationRequest.php validates the owner-controlled gotenberg_host setting only as a syntactically valid URL. GotenbergPDFDriver::loadView later sends a multipart HTTP request containing rendered invoice, estimate, or payment HTML as document.html to that host without rejecting private, loopback, link-local, or reserved addresses. An owner can use PDF generation to reach internal services or cloud metadata endpoints, and a configured external host receives customer names, addresses, line items, totals, and company identifiers from subsequent PDF renders. This issue is fixed in version 2.4.0.","Type":"Description","Title":"InvoiceShelf: SSRF via unvalidated Gotenberg PDF renderer host i"}]}}}