CVE-2026-34365

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{"affected": [{"affectedData": [{"product": "InvoiceShelf", "vendor": "InvoiceShelf", "versions": [{"status": "affected", "version": "< 2.2.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:invoiceshelf:invoiceshelf:*:*:*:*:*:*:*:*", "matchCriteriaId": "DF850775-DE65-40B0-9079-B1ABA4F1F4C9", "versionEndExcluding": "2.2.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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 Estimate PDF generation module. User-supplied HTML in the estimate Notes field is passed unsanitised to the Dompdf rendering library, which will fetch any remote resources referenced in the markup. The vulnerability is exploitable directly via the PDF preview and customer view endpoints regardless of whether automated email attachments are enabled. This issue has been patched in version 2.2.0."}, {"lang": "es", "value": "InvoiceShelf es una aplicaci\u00f3n web y m\u00f3vil de c\u00f3digo abierto que ayuda a rastrear gastos, pagos y crear facturas y presupuestos profesionales. Antes de la versi\u00f3n 2.2.0, existe una vulnerabilidad de falsificaci\u00f3n de petici\u00f3n del lado del servidor (SSRF) en el m\u00f3dulo de generaci\u00f3n de PDF de presupuestos. El HTML proporcionado por el usuario en el campo de Notas del presupuesto se pasa sin sanitizar a la biblioteca de renderizado Dompdf, la cual recuperar\u00e1 cualquier recurso remoto referenciado en el marcado. La vulnerabilidad es explotable directamente a trav\u00e9s de los puntos finales de vista previa de PDF y vista de cliente, independientemente de si los archivos adjuntos de correo electr\u00f3nico automatizados est\u00e1n habilitados. Este problema ha sido parcheado en la versi\u00f3n 2.2.0."}], "id": "CVE-2026-34365", "lastModified": "2026-07-24T20:10:00.147", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 4.7, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-34365", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-04-01T13:42:04.599372Z", "version": "2.0.3"}}]}, "published": "2026-03-31T20:16:29.307", "references": [{"source": "security-advisories@github.com", "tags": ["Product"], "url": "https://github.com/InvoiceShelf/InvoiceShelf/releases/tag/2.2.0"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/InvoiceShelf/InvoiceShelf/security/advisories/GHSA-pc5v-8xwc-v9xq"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/InvoiceShelf/InvoiceShelf/security/advisories/GHSA-pc5v-8xwc-v9xq"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-918"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.2.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "InvoiceShelf", "source": "cna", "vendor": "InvoiceShelf"}, "product": "invoiceshelf", "vendor": "invoiceshelf"}], "analysis": {"en": {"generated_at": "2026-04-07T23:08:50.977293+00:00", "value": {"mitigation_remediation": ["Update InvoiceShelf to version\u00a02.2.0 or later, which sanitises the Notes field and blocks external resource fetching during PDF rendering.", "After updating, verify that Dompdf no longer processes untrusted URLs embedded in user\u2011supplied HTML.", "If an immediate upgrade is not possible, limit access to the PDF preview/customer view endpoints or enforce server\u2011side filtering of URLs in the Notes field before PDF generation."], "summary": {"action": "Immediate Patch", "impact": "Unrestricted Internal Network Access via SSRF"}, "threat_synthesis": {"affected_systems": "All releases of InvoiceShelf prior to version\u00a02.2.0 are vulnerable. The fix is available in release\u00a02.2.0 and later. The product is an open\u2011source web and mobile application used for managing invoices and estimates.", "description_and_impact": "A Server\u2011Side Request Forgery flaw exists in the PDF generation path of InvoiceShelf\u2019s estimating module. User input placed in the Notes field is passed directly to the Dompdf rendering library without HTML sanitisation, allowing an attacker to embed arbitrary URLs in the note. When the PDF is rendered, Dompdf will fetch the referenced remote resource, causing the application server to make outbound requests on the attacker\u2019s behalf. This behaviour can expose internal network services, leak sensitive data, or serve as a stepping\u2011stone to further exploitation. The vulnerability is scored as CVSS\u00a07.6, indicating high severity.", "risk_and_exploitability": "The flaw is highly relevant to attackers who can create or edit estimates with custom Notes. Exploitation requires access to the PDF preview or customer view endpoints, which are normally protected by authentication. While the EPSS score is below\u00a01%, signalling a relatively low current exploit probability, the CVSS rating and lack of mitigations mean the vulnerability poses a real risk if left unpatched. It is not present in the CISA KEV catalogue. Attackers would typically learn the vulnerable endpoint by browsing the application, then inject a malicious URL in the Notes field to force the server to fetch internal or external content."}}}}, "created": "2026-04-02T07:53:02.805381+00:00", "updated": "2026-04-08T20:00:07.742246+00:00", "vendors": ["invoiceshelf", "invoiceshelf$PRODUCT$invoiceshelf"]}