CVE-2026-49136

{"id": "CVE-2026-49136", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-49136", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-02T15:39:26.996765Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 3.6, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.7, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "disclosure@vulncheck.com", "affectedData": [{"repo": "https://github.com/Anionex/banana-slides", "vendor": "Anionex", "product": "banana-slides", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "0.4.0"}, {"status": "unaffected", "version": "e8bc490ec8b4b657e07dc3ab4e94fbedcaade421", "versionType": "git"}], "packageURL": "pkg:github/Anionex/banana-slides", "defaultStatus": "affected"}]}], "published": "2026-06-01T21:16:46.627", "references": [{"url": "https://github.com/Anionex/banana-slides/commit/e8bc490ec8b4b657e07dc3ab4e94fbedcaade421", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/Anionex/banana-slides/issues/429", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/Anionex/banana-slides/pull/430", "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/banana-slides-path-traversal-via-generate-image-in-ai-service-py", "source": "disclosure@vulncheck.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-22"}]}], "descriptions": [{"lang": "en", "value": "Banana Slides through 0.4.0, patched in commit e8bc490, contains a path traversal vulnerability in the generate_image() function within the AI service backend that allows unauthenticated attackers to read arbitrary image-format files outside the intended uploads directory by exploiting an incomplete path prefix check using os.path.startswith() without a trailing separator. Attackers can supply crafted markdown image references in user-controlled page descriptions that resolve to sibling directories whose names share the uploads folder prefix, bypassing the directory confinement check and causing the application to read files from unintended locations via PIL Image.open()."}, {"lang": "es", "value": "Banana Slides a trav\u00e9s de 0.4.0, parcheado en el commit e8bc490, contiene una vulnerabilidad de salto de ruta en la funci\u00f3n generate_image() dentro del backend del servicio de IA que permite a atacantes no autenticados leer archivos arbitrarios en formato de imagen fuera del directorio uploads previsto, explotando una verificaci\u00f3n incompleta del prefijo de ruta que utiliza os.path.startswith() sin un separador final. Los atacantes pueden proporcionar referencias de imagen de markdown manipuladas en descripciones de p\u00e1gina controladas por el usuario que se resuelven en directorios hermanos cuyos nombres comparten el prefijo de la carpeta uploads, eludiendo la verificaci\u00f3n de confinamiento del directorio y haciendo que la aplicaci\u00f3n lea archivos de ubicaciones no deseadas a trav\u00e9s de PIL Image.open()."}], "lastModified": "2026-07-22T08:10:00.117", "sourceIdentifier": "disclosure@vulncheck.com"}