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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":May 22, 2026, 2 p.m.

No CVSS Level
Attach Vector		 Vendor Name Project Name Title CWE CVE Update Date Publication Date Impact
Show		 Exploit
PoC
Search
4381 6.5 警告
Network 		Mozilla Foundation Mozilla Firefox
Mozilla Thunderbird 		Mozilla FoundationのMozilla Firefox等の複数製品におけるクロスサイトリクエストフォージェリの脆弱性 CWE-352
同一生成元ポリシー違反 		CVE-2026-6755 2026-04-24 11:40 2026-04-21 Show GitHub Exploit DB Packet Storm
4382 7.5 重要
Network 		Mozilla Foundation Mozilla Firefox Mozilla FoundationのMozilla Firefoxにおける情報漏えいに関する脆弱性 CWE-200
情報漏えい 		CVE-2026-6756 2026-04-24 11:40 2026-04-21 Show GitHub Exploit DB Packet Storm
4383 6.3 警告
Network 		Mozilla Foundation Mozilla Firefox
Mozilla Thunderbird 		Mozilla FoundationのMozilla Firefox等の複数製品における初期化されていないポインタのアクセスに関する脆弱性 CWE-824
初期化されていないポインタのアクセス 		CVE-2026-6757 2026-04-24 11:40 2026-04-21 Show GitHub Exploit DB Packet Storm
4384 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解放済みメモリの使用に関する脆弱性 CWE-416
解放済みメモリの使用 		CVE-2026-6758 2026-04-24 11:40 2026-04-21 Show GitHub Exploit DB Packet Storm
4385 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解放済みメモリの使用に関する脆弱性 CWE-416
解放済みメモリの使用 		CVE-2026-6759 2026-04-24 11:39 2026-04-21 Show GitHub Exploit DB Packet Storm
4386 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代替パスまたはチャネルを使用した認証回避に関する脆弱性 CWE-288
代替パスまたはチャネルを使用した認証回避 		CVE-2026-6760 2026-04-24 11:39 2026-04-21 Show GitHub Exploit DB Packet Storm
4387 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-2026-6761 2026-04-24 11:39 2026-04-21 Show GitHub Exploit DB Packet Storm
4388 6.3 警告
Network 		Mozilla Foundation Mozilla Firefox
Mozilla Thunderbird 		Mozilla FoundationのMozilla Firefox等の複数製品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-2026-6762 2026-04-24 11:39 2026-04-21 Show GitHub Exploit DB Packet Storm
4389 6.5 警告
Network 		Mozilla Foundation Mozilla Firefox
Mozilla Thunderbird 		Mozilla FoundationのMozilla Firefox等の複数製品における保護メカニズムの不具合に関する脆弱性 CWE-693
保護メカニズムの不具合 		CVE-2026-6763 2026-04-24 11:39 2026-04-21 Show GitHub Exploit DB Packet Storm
4390 6.5 警告
Network 		Mozilla Foundation Mozilla Firefox
Mozilla Thunderbird 		Mozilla FoundationのMozilla Firefox等の複数製品におけるバッファエラーの脆弱性 CWE-119
バッファエラー 		CVE-2026-6764 2026-04-24 11:39 2026-04-21 Show GitHub Exploit DB Packet Storm
NVD Vulnerability Information

Update Date:May 22, 2026, 4:08 a.m.

No CVSS Level
Attach Vector		 Vendor Name Project Name Title CWE CVE Update Date Publication Date Show Affected Exploit
PoC
Search
341 9.3 CRITICAL
Network 		mozilla firefox
thunderbird 		Same-origin policy bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. New CWE-346
 Origin Validation Error 		CVE-2026-8950 2026-05-21 00:00 2026-05-19 Show GitHub Exploit DB Packet Storm
342 7.5 HIGH
Network 		mozilla firefox
thunderbird 		Spoofing issue in the Web Speech component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. New CWE-290
 Authentication Bypass by Spoofing 		CVE-2026-8963 2026-05-20 23:57 2026-05-19 Show GitHub Exploit DB Packet Storm
343 7.5 HIGH
Network 		mozilla firefox
thunderbird 		Spoofing issue in the Popup Blocker component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. New CWE-451
 User Interface (UI) Misrepresentation of Critical Information 		CVE-2026-8964 2026-05-20 23:57 2026-05-19 Show GitHub Exploit DB Packet Storm
344 7.5 HIGH
Network 		mozilla firefox
thunderbird 		Denial-of-service due to invalid pointer in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. New CWE-400
 Uncontrolled Resource Consumption 		CVE-2026-8968 2026-05-20 23:56 2026-05-19 Show GitHub Exploit DB Packet Storm
345 8.1 HIGH
Network 		mozilla firefox
thunderbird 		Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. New CWE-693
 Protection Mechanism Failure 		CVE-2026-8969 2026-05-20 23:55 2026-05-19 Show GitHub Exploit DB Packet Storm
346 9.1 CRITICAL
Network 		mozilla firefox
thunderbird 		Same-origin policy bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. New CWE-942
 Permissive Cross-domain Policy with Untrusted Domains 		CVE-2026-8948 2026-05-20 23:53 2026-05-19 Show GitHub Exploit DB Packet Storm
347 7.5 HIGH
Network 		mozilla firefox
thunderbird 		Integer overflow in the Widget: Win32 component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. New CWE-190
 Integer Overflow or Wraparound 		CVE-2026-8949 2026-05-20 23:49 2026-05-19 Show GitHub Exploit DB Packet Storm
348 6.5 MEDIUM
Network 		mozilla firefox Spoofing issue in the Toolbar component in Firefox for Android. This vulnerability was fixed in Firefox 151. New CWE-290
 Authentication Bypass by Spoofing 		CVE-2026-8951 2026-05-20 23:48 2026-05-19 Show GitHub Exploit DB Packet Storm
349 6.5 MEDIUM
Network 		mozilla firefox
thunderbird 		Same-origin policy bypass in the Networking: JAR component. This vulnerability was fixed in Firefox 151 and Thunderbird 151. New CWE-346
 Origin Validation Error 		CVE-2026-8971 2026-05-20 23:41 2026-05-19 Show GitHub Exploit DB Packet Storm
350 9.8 CRITICAL
Network 		mozilla firefox
thunderbird 		Integer overflow in the Networking: JAR component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. New CWE-190
 Integer Overflow or Wraparound 		CVE-2026-8956 2026-05-20 23:31 2026-05-19 Show GitHub Exploit DB Packet Storm