CVE-2026-10595

A path traversal vulnerability exists in parisneo/lollms version 2.1.0, specifically in the SPA catch-all route implemented in `backend/routers/ui.py`. The vulnerability arises from the improper handling of user-controlled path input, which is directly joined into a filesystem path without sanitization or containment checks. URL-encoded dot-dot sequences (`%2e%2e`) bypass Starlette's built-in path normalization and are resolved by Python's `pathlib`, allowing an unauthenticated attacker to read arbitrary files on the server. This issue has been resolved in version 3.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector : AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/parisneo/lollms/commit/9bc6431ae7b708da76d51e7626a7cf48ff2b1d24
https://huntr.com/bounties/af3f40a3-38a1-49d8-a5ae-3d72b9b05b98
https://huntr.com/bounties/af3f40a3-38a1-49d8-a5ae-3d72b9b05b98

Configurations

No configuration.

History

23 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Una vulnerabilidad de salto de ruta existe en parisneo/lollms versión 2.1.0, específicamente en la ruta ’catch-all’ de SPA implementada en ’backend/routers/ui.py’. La vulnerabilidad surge del manejo inadecuado de la entrada de ruta controlada por el usuario, que se une directamente a una ruta del sistema de archivos sin saneamiento ni comprobaciones de contención. Las secuencias de doble punto codificadas en URL (’%2e%2e’) eluden la normalización de rutas incorporada de Starlette y son resueltas por ’pathlib’ de Python, permitiendo a un atacante no autenticado leer archivos arbitrarios en el servidor. Este problema ha sido resuelto en la versión 3.

Information

Published : 2026-08-09 04:17

Updated : 2026-10-23 20:10

NVD link : CVE-2026-10595

Mitre link : CVE-2026-10595

CVE.ORG link : CVE-2026-10595

JSON object : View

Products Affected

No product.

CWE

CWE-23

Relative Path Traversal

{"id": "CVE-2026-10595", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-10595", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-10T17:14:57.414907Z"}}], "cvssMetricV30": [{"type": "Secondary", "source": "security@huntr.dev", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/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}]}, "affected": [{"source": "security@huntr.dev", "affectedData": [{"vendor": "parisneo", "product": "parisneo/lollms", "versions": [{"status": "affected", "version": "unspecified", "lessThan": "3", "versionType": "custom"}]}]}], "published": "2026-08-09T04:17:29.400", "references": [{"url": "https://github.com/parisneo/lollms/commit/9bc6431ae7b708da76d51e7626a7cf48ff2b1d24", "source": "security@huntr.dev"}, {"url": "https://huntr.com/bounties/af3f40a3-38a1-49d8-a5ae-3d72b9b05b98", "source": "security@huntr.dev"}, {"url": "https://huntr.com/bounties/af3f40a3-38a1-49d8-a5ae-3d72b9b05b98", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security@huntr.dev", "description": [{"lang": "en", "value": "CWE-23"}]}], "descriptions": [{"lang": "en", "value": "A path traversal vulnerability exists in parisneo/lollms version 2.1.0, specifically in the SPA catch-all route implemented in `backend/routers/ui.py`. The vulnerability arises from the improper handling of user-controlled path input, which is directly joined into a filesystem path without sanitization or containment checks. URL-encoded dot-dot sequences (`%2e%2e`) bypass Starlette's built-in path normalization and are resolved by Python's `pathlib`, allowing an unauthenticated attacker to read arbitrary files on the server. This issue has been resolved in version 3."}, {"lang": "es", "value": "Una vulnerabilidad de salto de ruta existe en parisneo/lollms versi\u00f3n 2.1.0, espec\u00edficamente en la ruta \u2019catch-all\u2019 de SPA implementada en \u2019backend/routers/ui.py\u2019. La vulnerabilidad surge del manejo inadecuado de la entrada de ruta controlada por el usuario, que se une directamente a una ruta del sistema de archivos sin saneamiento ni comprobaciones de contenci\u00f3n. Las secuencias de doble punto codificadas en URL (\u2019%2e%2e\u2019) eluden la normalizaci\u00f3n de rutas incorporada de Starlette y son resueltas por \u2019pathlib\u2019 de Python, permitiendo a un atacante no autenticado leer archivos arbitrarios en el servidor. Este problema ha sido resuelto en la versi\u00f3n 3."}], "lastModified": "2026-10-23T20:10:00.160", "sourceIdentifier": "security@huntr.dev"}