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You can search for vulnerabilities managed by JVN (Japan Vulnerability Note) and NVD (National Vulnerability Database).
Search keywords must be entered in English otherwise will not be searched in both JVN and NVD.

To search by CWE, please refer to the CWE Overview and check the CWE number.

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JVN Vulnerability Information

Update Date":June 18, 2026, 6 p.m.

No CVSS Level
Attach Vector		 Vendor Name Project Name Title CWE CVE Update Date Publication Date Impact
Show		 Exploit
PoC
Search
258601 5 警告 Opera Software ASA - Opera におけるサービス運用妨害 (DoS) の脆弱性 CWE-399
リソース管理の問題 		CVE-2009-3269 2010-09-27 16:14 2009-09-18 Show GitHub Exploit DB Packet Storm
258602 4.3 警告 Opera Software ASA - Opera におけるクロスサイトスクリプティングの脆弱性 CWE-79
クロスサイト・スクリプティング（XSS） 		CVE-2009-3266 2010-09-27 16:14 2009-09-18 Show GitHub Exploit DB Packet Storm
258603 4.3 警告 Opera Software ASA - Opera におけるクロスサイトスクリプティングの脆弱性 CWE-79
クロスサイト・スクリプティング（XSS） 		CVE-2009-3265 2010-09-27 16:14 2009-09-18 Show GitHub Exploit DB Packet Storm
258604 5 警告 Opera Software ASA - Opera の X.509 証明書における SSLサーバになりすまされる脆弱性 CWE-310
暗号の問題 		CVE-2009-3044 2010-09-27 16:13 2009-09-1 Show GitHub Exploit DB Packet Storm
258605 4.3 警告 Opera Software ASA - Opera における data: URI をブロックしない脆弱性 CWE-79
クロスサイト・スクリプティング（XSS） 		CVE-2009-3013 2010-09-27 16:13 2009-08-31 Show GitHub Exploit DB Packet Storm
258606 5 警告 Opera Software ASA - Opera におけるサービス運用妨害 (DoS) の脆弱性 CWE-399
リソース管理の問題 		CVE-2009-2577 2010-09-27 16:12 2009-07-22 Show GitHub Exploit DB Packet Storm
258607 4.3 警告 Opera Software ASA - Opera におけるサービス運用妨害 (DoS) の脆弱性 CWE-399
リソース管理の問題 		CVE-2009-2540 2010-09-27 16:11 2009-07-20 Show GitHub Exploit DB Packet Storm
258608 4.3 警告 Opera Software ASA - Opera における javascript: URI をブロックしない脆弱性 CWE-79
クロスサイト・スクリプティング（XSS） 		CVE-2009-2351 2010-09-27 16:11 2009-07-7 Show GitHub Exploit DB Packet Storm
258609 6.8 警告 Opera Software ASA - Opera における任意の https サイトになりすまされる脆弱性 CWE-287
不適切な認証 		CVE-2009-2070 2010-09-27 16:11 2009-06-15 Show GitHub Exploit DB Packet Storm
258610 6.8 警告 Opera Software ASA - Opera における任意の Web スクリプトを実行される脆弱性 CWE-287
不適切な認証 		CVE-2009-2067 2010-09-27 16:10 2009-06-15 Show GitHub Exploit DB Packet Storm
NVD Vulnerability Information

Update Date:June 19, 2026, 4:01 a.m.

No CVSS Level
Attach Vector		 Vendor Name Project Name Title CWE CVE Update Date Publication Date Show Affected Exploit
PoC
Search
200671 7.5 HIGH
Network 		mercari mercari Improper authorization in handler for custom URL scheme vulnerability in Android App 'Mercari (Merpay) - Marketplace and Mobile Payments App' (Japan version) versions prior to 4.49.1 allows a remote … CWE-862
 Missing Authorization 		CVE-2021-20835 2024-11-21 14:47 2021-11-25 Show GitHub Exploit DB Packet Storm
200672 7.5 HIGH
Network 		nec expresscluster_x
clusterpro_x
expresscluster_x_singleserversafe
clusterpro_x_singleserversafe 		Improper input validation vulnerability in the Transaction Server CLUSTERPRO X 4.3 for Windows and earlier, EXPRESSCLUSTER X 4.3 for Windows and earlier, CLUSTERPRO X 4.3 SingleServerSafe for Windows… CWE-20
 Improper Input Validation  		CVE-2021-20707 2024-11-21 14:47 2021-11-3 Show GitHub Exploit DB Packet Storm
200673 7.5 HIGH
Network 		nec expresscluster_x
clusterpro_x
expresscluster_x_singleserversafe
clusterpro_x_singleserversafe 		Improper input validation vulnerability in the WebManager CLUSTERPRO X 4.3 for Windows and earlier, EXPRESSCLUSTER X 4.3 for Windows and earlier, CLUSTERPRO X 4.3 SingleServerSafe for Windows and ear… CWE-20
 Improper Input Validation  		CVE-2021-20706 2024-11-21 14:47 2021-11-3 Show GitHub Exploit DB Packet Storm
200674 7.5 HIGH
Network 		nec expresscluster_x
clusterpro_x
expresscluster_x_singleserversafe
clusterpro_x_singleserversafe 		Improper input validation vulnerability in the WebManager CLUSTERPRO X 4.3 for Windows and earlier, EXPRESSCLUSTER X 4.3 for Windows and earlier, CLUSTERPRO X 4.3 SingleServerSafe for Windows and ear… CWE-20
 Improper Input Validation  		CVE-2021-20705 2024-11-21 14:47 2021-11-3 Show GitHub Exploit DB Packet Storm
200675 9.8 CRITICAL
Network 		nec expresscluster_x
clusterpro_x
expresscluster_x_singleserversafe
clusterpro_x_singleserversafe 		Buffer overflow vulnerability in the compatible API with previous versions CLUSTERPRO X 4.3 for Windows and earlier, EXPRESSCLUSTER X 4.3 for Windows and earlier, CLUSTERPRO X 4.3 SingleServerSafe fo… CWE-120
Classic Buffer Overflow 		CVE-2021-20704 2024-11-21 14:47 2021-11-3 Show GitHub Exploit DB Packet Storm
200676 9.8 CRITICAL
Network 		nec expresscluster_x
clusterpro_x
expresscluster_x_singleserversafe
clusterpro_x_singleserversafe 		Buffer overflow vulnerability in the Transaction Server CLUSTERPRO X 4.3 for Windows and earlier, EXPRESSCLUSTER X 4.3 for Windows and earlier, CLUSTERPRO X 4.3 SingleServerSafe for Windows and earli… CWE-120
Classic Buffer Overflow 		CVE-2021-20703 2024-11-21 14:47 2021-11-3 Show GitHub Exploit DB Packet Storm
200677 9.8 CRITICAL
Network 		nec expresscluster_x
clusterpro_x
expresscluster_x_singleserversafe
clusterpro_x_singleserversafe 		Buffer overflow vulnerability in the Transaction Server CLUSTERPRO X 4.3 for Windows and earlier, EXPRESSCLUSTER X 4.3 for Windows and earlier, CLUSTERPRO X 4.3 SingleServerSafe for Windows and earli… CWE-120
Classic Buffer Overflow 		CVE-2021-20702 2024-11-21 14:47 2021-11-3 Show GitHub Exploit DB Packet Storm
200678 9.8 CRITICAL
Network 		nec expresscluster_x
clusterpro_x
expresscluster_x_singleserversafe
clusterpro_x_singleserversafe 		Buffer overflow vulnerability in the Disk Agent CLUSTERPRO X 4.3 for Windows and earlier, EXPRESSCLUSTER X 4.3 for Windows and earlier, CLUSTERPRO X 4.3 SingleServerSafe for Windows and earlier, EXPR… CWE-120
Classic Buffer Overflow 		CVE-2021-20701 2024-11-21 14:47 2021-11-3 Show GitHub Exploit DB Packet Storm
200679 9.8 CRITICAL
Network 		nec expresscluster_x
clusterpro_x
expresscluster_x_singleserversafe
clusterpro_x_singleserversafe 		Buffer overflow vulnerability in the Disk Agent CLUSTERPRO X 4.3 for Windows and earlier, EXPRESSCLUSTER X 4.3 for Windows and earlier, CLUSTERPRO X 4.3 SingleServerSafe for Windows and earlier, EXPR… CWE-120
Classic Buffer Overflow 		CVE-2021-20700 2024-11-21 14:47 2021-11-3 Show GitHub Exploit DB Packet Storm
200680 6.5 MEDIUM
Network 		antennahouse office_server_document_converter Office Server Document Converter V7.2MR4 and earlier and V7.1MR7 and earlier allows a remote unauthenticated attacker to conduct an XML External Entity (XXE) attack to cause a denial of service (DoS)… CWE-611
XXE 		CVE-2021-20839 2024-11-21 14:47 2021-11-1 Show GitHub Exploit DB Packet Storm