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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 21, 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
3051 3.1 低
Network 		EMQX emqx EMQXのemqxにおける競合状態に関する脆弱性 CWE-362
競合状態 		CVE-2026-8741 2026-05-22 10:52 2026-05-17 Show GitHub Exploit DB Packet Storm
3052 9.1 緊急
Network 		Mozilla Foundation Mozilla Firefox
Mozilla Thunderbird 		Mozilla FoundationのMozilla Firefox等の複数製品における過度に許容されるクロスドメインホワイトリストに関する脆弱性 CWE-942
過度に許容されるクロスドメインホワイトリスト 		CVE-2026-8948 2026-05-22 10:52 2026-05-19 Show GitHub Exploit DB Packet Storm
3053 7.5 重要
Network 		Mozilla Foundation Mozilla Firefox
Mozilla Thunderbird 		Mozilla FoundationのMozilla Firefox等の複数製品における整数オーバーフローの脆弱性 CWE-190
整数オーバーフローまたはラップアラウンド 		CVE-2026-8949 2026-05-22 10:52 2026-05-19 Show GitHub Exploit DB Packet Storm
3054 9.3 緊急
Network 		Mozilla Foundation Mozilla Firefox
Mozilla Thunderbird 		Mozilla FoundationのMozilla Firefox等の複数製品における同一生成元ポリシー違反に関する脆弱性 CWE-346
同一生成元ポリシー違反 		CVE-2026-8950 2026-05-22 10:52 2026-05-19 Show GitHub Exploit DB Packet Storm
3055 6.5 警告
Network 		Mozilla Foundation Mozilla Firefox Mozilla FoundationのMozilla Firefoxにおけるスプーフィングによる認証回避に関する脆弱性 CWE-290
スプーフィングによる認証回避 		CVE-2026-8951 2026-05-22 10:52 2026-05-19 Show GitHub Exploit DB Packet Storm
3056 8.8 重要
Network 		Mozilla Foundation Mozilla Firefox
Mozilla Thunderbird 		Mozilla FoundationのMozilla Firefox等の複数製品における権限管理に関する脆弱性 CWE-269
不適切な権限管理 		CVE-2026-8952 2026-05-22 10:52 2026-05-19 Show GitHub Exploit DB Packet Storm
3057 8.8 重要
Network 		Mozilla Foundation Mozilla Firefox
Mozilla Thunderbird 		Mozilla FoundationのMozilla Firefox等の複数製品における権限管理に関する脆弱性 CWE-269
不適切な権限管理 		CVE-2026-8955 2026-05-22 10:52 2026-05-19 Show GitHub Exploit DB Packet Storm
3058 9.8 緊急
Network 		Mozilla Foundation Mozilla Firefox
Mozilla Thunderbird 		Mozilla FoundationのMozilla Firefox等の複数製品における整数オーバーフローの脆弱性 CWE-190
整数オーバーフローまたはラップアラウンド 		CVE-2026-8956 2026-05-22 10:52 2026-05-19 Show GitHub Exploit DB Packet Storm
3059 8.8 重要
Network 		Mozilla Foundation Mozilla Firefox
Mozilla Thunderbird 		Mozilla FoundationのMozilla Firefox等の複数製品における権限管理に関する脆弱性 CWE-269
不適切な権限管理 		CVE-2026-8957 2026-05-22 10:52 2026-05-19 Show GitHub Exploit DB Packet Storm
3060 8.6 重要
Network 		Mozilla Foundation Mozilla Firefox
Mozilla Thunderbird 		Mozilla FoundationのMozilla Firefox等の複数製品における複数の脆弱性 CWE-668
CWE-693
CVE-2026-8958 2026-05-22 10:52 2026-05-19 Show GitHub Exploit DB Packet Storm
NVD Vulnerability Information

Update Date:June 21, 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
307491 - opera opera_browser Opera before 11.10 allows remote attackers to cause a denial of service (application crash) via an HTML document that has an empty parameter value for an embedded Java applet. CWE-399
 Resource Management Errors 		CVE-2011-2640 2024-11-21 10:28 2011-07-1 Show GitHub Exploit DB Packet Storm
307492 - opera opera_browser Opera before 11.10 does not properly handle hidden animated GIF images, which allows remote attackers to cause a denial of service (CPU consumption) via an image file that triggers continual repaints. CWE-399
 Resource Management Errors 		CVE-2011-2639 2024-11-21 10:28 2011-07-1 Show GitHub Exploit DB Packet Storm
307493 - opera opera_browser Unspecified vulnerability in Opera before 11.10 allows remote attackers to cause a denial of service (application crash) via unknown content on a web page, as demonstrated by games on zylom.com. NVD-CWE-noinfo
CVE-2011-2638 2024-11-21 10:28 2011-07-1 Show GitHub Exploit DB Packet Storm
307494 - opera opera_browser Unspecified vulnerability in Opera before 11.10 allows remote attackers to cause a denial of service (application crash) via unknown content on a web page, as demonstrated by futura-sciences.com, seo… NVD-CWE-noinfo
CVE-2011-2637 2024-11-21 10:28 2011-07-1 Show GitHub Exploit DB Packet Storm
307495 - opera opera_browser Unspecified vulnerability in Opera before 11.10 allows remote attackers to cause a denial of service (application crash) via unknown content on a web page, as demonstrated by a certain Tomato Firmwar… NVD-CWE-noinfo
CVE-2011-2636 2024-11-21 10:28 2011-07-1 Show GitHub Exploit DB Packet Storm
307496 - opera opera_browser The Cascading Style Sheets (CSS) implementation in Opera before 11.10 allows remote attackers to cause a denial of service (application crash) via vectors involving use of the :hover pseudo-class, in… CWE-399
 Resource Management Errors 		CVE-2011-2635 2024-11-21 10:28 2011-07-1 Show GitHub Exploit DB Packet Storm
307497 - opera opera_browser Opera before 11.10 allows remote attackers to hijack (1) searches and (2) customizations via unspecified third party applications. CWE-20
 Improper Input Validation  		CVE-2011-2634 2024-11-21 10:28 2011-07-1 Show GitHub Exploit DB Packet Storm
307498 - opera opera_browser Unspecified vulnerability in Opera before 11.11 allows remote attackers to cause a denial of service (application crash) via vectors involving a Certificate Revocation List (CRL) file, as demonstrate… NVD-CWE-noinfo
CVE-2011-2633 2024-11-21 10:28 2011-07-1 Show GitHub Exploit DB Packet Storm
307499 - opera opera_browser Opera before 11.11 does not properly handle destruction of a Silverlight instance, which allows remote attackers to cause a denial of service (application crash) via a web page, as demonstrated by vo… CWE-20
 Improper Input Validation  		CVE-2011-2632 2024-11-21 10:28 2011-07-1 Show GitHub Exploit DB Packet Storm
307500 - opera opera_browser The Cascading Style Sheets (CSS) implementation in Opera before 11.11 does not properly handle the column-count property, which allows remote attackers to cause a denial of service (infinite repaint … CWE-20
 Improper Input Validation  		CVE-2011-2631 2024-11-21 10:28 2011-07-1 Show GitHub Exploit DB Packet Storm