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You can search for vulnerabilities managed by JVN (Japan Vulnerability Note) and NVD (National Vulnerability Database).
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JVN Vulnerability Information

Update Date":May 26, 2026, 6 p.m.

No CVSS Level
Attach Vector		 Vendor Name Project Name Title CWE CVE Update Date Publication Date Impact
Show		 Exploit
PoC
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252281 5 警告 Google - Google V8 におけるサービス運用妨害 (CPU 資源の消費) の脆弱性 CWE-20
不適切な入力確認 		CVE-2011-5037 2012-01-4 16:48 2011-12-30 Show GitHub Exploit DB Packet Storm
252282 5 警告 Christian Neukirchen - Rack におけるサービス運用妨害 (CPU 資源の消費) の脆弱性 CWE-20
不適切な入力確認 		CVE-2011-5036 2012-01-4 16:48 2011-12-30 Show GitHub Exploit DB Packet Storm
252283 7.8 危険 Apache Software Foundation - Apache Geronimo におけるサービス運用妨害 (CPU 資源の消費) の脆弱性 CWE-20
不適切な入力確認 		CVE-2011-5034 2012-01-4 16:47 2011-12-30 Show GitHub Exploit DB Packet Storm
252284 7.8 危険 JRuby - JRuby におけるサービス運用妨害 (CPU 資源の消費) の脆弱性 CWE-20
不適切な入力確認 		CVE-2011-4838 2012-01-4 16:43 2011-12-28 Show GitHub Exploit DB Packet Storm
252285 5 警告 Plone Foundation - Plone におけるサービス運用妨害 (CPU 資源の消費) の脆弱性 CWE-20
不適切な入力確認 		CVE-2011-4462 2012-01-4 16:38 2011-12-30 Show GitHub Exploit DB Packet Storm
252286 9.3 危険 マイクロソフト - Microsoft .NET Framework における任意のユーザアカウントへアクセスされる脆弱性 CWE-264
認可・権限・アクセス制御 		CVE-2011-3417 2012-01-4 16:34 2011-12-29 Show GitHub Exploit DB Packet Storm
252287 8.5 危険 マイクロソフト - Microsoft .NET Framework における任意のユーザアカウントへアクセスされる脆弱性 CWE-264
認可・権限・アクセス制御 		CVE-2011-3416 2012-01-4 16:33 2011-12-29 Show GitHub Exploit DB Packet Storm
252288 9.3 危険 Google
Hex-Rays		 - IDA Pro の IDAPython プラグインにおける任意のコードを実行される脆弱性 CWE-20
不適切な入力確認 		CVE-2011-4783 2011-12-28 16:47 2011-07-27 Show GitHub Exploit DB Packet Storm
252289 7.2 危険 NVIDIA - NVIDIA Stereoscopic 3D ドライバにおける権限を取得される脆弱性 CWE-20
不適切な入力確認 		CVE-2011-4784 2011-12-28 16:44 2011-12-27 Show GitHub Exploit DB Packet Storm
252290 4.3 警告 WP Symposium - WordPress 用の WP Symposium プラグイン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-2011-3841 2011-12-28 16:40 2011-12-7 Show GitHub Exploit DB Packet Storm
NVD Vulnerability Information

Update Date:May 26, 2026, 4:05 a.m.

No CVSS Level
Attach Vector		 Vendor Name Project Name Title CWE CVE Update Date Publication Date Show Affected Exploit
PoC
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221711 7.5 HIGH
Network 		mattermost mattermost_server An issue was discovered in Mattermost Server before 5.7, 5.6.3, 5.5.2, and 4.10.5. It allows attackers to cause a denial of service (memory consumption) via an outgoing webhook or a slash command int… CWE-401
 Missing Release of Memory after Effective Lifetime 		CVE-2019-20888 2024-11-21 13:39 2020-06-20 Show GitHub Exploit DB Packet Storm
221712 4.3 MEDIUM
Network 		mattermost mattermost_server An issue was discovered in Mattermost Server before 5.7.1, 5.6.4, 5.5.3, and 4.10.6. It does not honor flags API permissions when deciding whether a user can receive intra-team posts. CWE-862
 Missing Authorization 		CVE-2019-20887 2024-11-21 13:39 2020-06-20 Show GitHub Exploit DB Packet Storm
221713 7.5 HIGH
Network 		mattermost mattermost_server An issue was discovered in Mattermost Server before 5.8.0. The first user is sometimes inadvertently a system admin. CWE-269
 Improper Privilege Management 		CVE-2019-20886 2024-11-21 13:39 2020-06-20 Show GitHub Exploit DB Packet Storm
221714 7.5 HIGH
Network 		mattermost mattermost_server An issue was discovered in Mattermost Server before 5.8.0. It does not always generate a robots.txt file. CWE-862
 Missing Authorization 		CVE-2019-20885 2024-11-21 13:39 2020-06-20 Show GitHub Exploit DB Packet Storm
221715 5.3 MEDIUM
Network 		mattermost mattermost_server An issue was discovered in Mattermost Server before 5.8.0. It allows attackers to partially attach a file to more than one post. NVD-CWE-noinfo
CVE-2019-20884 2024-11-21 13:39 2020-06-20 Show GitHub Exploit DB Packet Storm
221716 4.3 MEDIUM
Network 		mattermost mattermost_server An issue was discovered in Mattermost Server before 5.8.0, when Town Square is set to Read-Only. Users can pin or unpin a post. NVD-CWE-noinfo
CVE-2019-20883 2024-11-21 13:39 2020-06-20 Show GitHub Exploit DB Packet Storm
221717 5.3 MEDIUM
Network 		mattermost mattermost_server An issue was discovered in Mattermost Server before 5.8.0. It does not honor the domain requirement when processing a join request for an open team. CWE-276
Incorrect Default Permissions  		CVE-2019-20882 2024-11-21 13:39 2020-06-20 Show GitHub Exploit DB Packet Storm
221718 7.3 HIGH
Network 		mattermost mattermost_server An issue was discovered in Mattermost Server before 5.8.0. It mishandles brute-force attacks against MFA. CWE-307
mproper Restriction of Excessive Authentication Attempts 		CVE-2019-20881 2024-11-21 13:39 2020-06-20 Show GitHub Exploit DB Packet Storm
221719 7.5 HIGH
Network 		mattermost mattermost_server An issue was discovered in Mattermost Server before 5.8.0, 5.7.2, 5.6.5, and 4.10.7. It allows attackers to cause a denial of service (memory consumption) via OpenGraph. CWE-770
 Allocation of Resources Without Limits or Throttling 		CVE-2019-20880 2024-11-21 13:39 2020-06-20 Show GitHub Exploit DB Packet Storm
221720 4.3 MEDIUM
Network 		mattermost mattermost_server An issue was discovered in Mattermost Server before 5.8.0, 5.7.2, 5.6.5, and 4.10.7. Changes to e-mail addresses do not require credential re-entry. CWE-287
Improper Authentication 		CVE-2019-20879 2024-11-21 13:39 2020-06-20 Show GitHub Exploit DB Packet Storm