EUVD-2026-54864
GHSA-37c2-pxv8-c2mx
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Network-reachable HTTP endpoint (AV:N), no authentication or configuration prerequisite (PR:N, AC:L), read-only arbitrary file disclosure (C:H, I:N, A:N).
Primary rating from Vendor (huntr_ai).
CVSS VectorVendor: huntr_ai
Lifecycle Timeline
4DescriptionCVE.org
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.
AnalysisAI
Path traversal in parisneo/lollms 2.1.0 exposes arbitrary server files to unauthenticated remote attackers via the SPA catch-all route in backend/routers/ui.py. URL-encoded dot-dot sequences (%2e%2e) bypass Starlette's built-in path normalization and are decoded by Python's pathlib.resolve(), allowing directory escape from the static file root with no privileges or user interaction required. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions are required - the CVSS vector PR:N/UI:N/AC:L confirms unauthenticated, zero-interaction exploitation against any network-reachable LoLLMs 2.1.0 instance running the default configuration. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.0 vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N accurately reflects the exploitability profile: the attack is fully remote, requires zero authentication or user interaction, and has low complexity - all characteristics that make it trivially automatable. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to LoLLMs version 3 or later, which enforces filesystem containment via `Path.resolve()` and `is_relative_to()` in the SPA catch-all route. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, complete an asset inventory of all lollms 2.1.0 instances across production and staging environments and restrict network access through firewall rules or network segmentation-disable internet-facing exposure if operationally feasible. …
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Same weakness CWE-23 – Relative Path Traversal
View allSame technique Path Traversal
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External POC / Exploit Code
Leaving vuln.today