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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 27, 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
661 6.1 警告
Network 		Python Software Foundation cpython Python Software Foundationのcpythonにおける複数の脆弱性 CWE-116
CWE-150
CVE-2026-6019 2026-05-20 13:25 2026-04-22 Show GitHub Exploit DB Packet Storm
662 4.3 警告
Network 		Mattermost, Inc. Mattermost Server Mattermost, Inc.のMattermost Server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-2026-6339 2026-05-20 13:25 2026-05-18 Show GitHub Exploit DB Packet Storm
663 4.3 警告
Network 		Mattermost, Inc. Mattermost Server Mattermost, Inc.のMattermost Serverにおける不正な認証に関する脆弱性 CWE-863
不正な認証 		CVE-2026-6343 2026-05-20 13:25 2026-05-18 Show GitHub Exploit DB Packet Storm
664 6.5 警告
Network 		Mattermost, Inc. Mattermost Server Mattermost, Inc.のMattermost Serverにおける認証情報の不十分な保護に関する脆弱性 CWE-522
認証情報の不十分な保護 		CVE-2026-6345 2026-05-20 13:25 2026-05-18 Show GitHub Exploit DB Packet Storm
665 8.7 重要
Network 		Mattermost, Inc. Mattermost Server Mattermost, Inc.のMattermost Serverにおける情報漏えいに関する脆弱性 CWE-200
情報漏えい 		CVE-2026-6346 2026-05-20 13:25 2026-05-18 Show GitHub Exploit DB Packet Storm
666 7.6 重要
Network 		Mattermost, Inc. Mattermost Server Mattermost, Inc.のMattermost Serverにおける情報漏えいに関する脆弱性 CWE-200
情報漏えい 		CVE-2026-6347 2026-05-20 13:25 2026-05-18 Show GitHub Exploit DB Packet Storm
667 6.5 警告
Network 		webpack.js webpack-dev-server webpackのwebpack-dev-serverにおける危険なメソッドや機能の公開に関する脆弱性 CWE-749
危険なメソッドや機能の公開 		CVE-2026-6402 2026-05-20 13:25 2026-05-12 Show GitHub Exploit DB Packet Storm
668 5.4 警告
Network 		PostgreSQL.org PostgreSQL PostgreSQL.orgのPostgreSQLにおける認証の欠如に関する脆弱性 CWE-862
認証の欠如 		CVE-2026-6472 2026-05-20 13:25 2026-05-14 Show GitHub Exploit DB Packet Storm
669 8.8 重要
Network 		PostgreSQL.org PostgreSQL PostgreSQL.orgのPostgreSQL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-2026-6473 2026-05-20 13:25 2026-05-14 Show GitHub Exploit DB Packet Storm
670 4.3 警告
Network 		PostgreSQL.org PostgreSQL PostgreSQL.orgのPostgreSQLにおける書式文字列に関する脆弱性 CWE-134
書式文字列の問題 		CVE-2026-6474 2026-05-20 13:25 2026-05-14 Show GitHub Exploit DB Packet Storm
NVD Vulnerability Information

Update Date:May 27, 2026, 4:52 a.m.

No CVSS Level
Attach Vector		 Vendor Name Project Name Title CWE CVE Update Date Publication Date Show Affected Exploit
PoC
Search
1631 3.1 LOW
Network 		- - Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13 fail to enforce client identity binding during the OAuth authorization code redemption flow which allows an authenticated OAuth client to red… CWE-305
 Authentication Bypass by Primary Weakness 		CVE-2026-6334 2026-05-19 02:32 2026-05-18 Show GitHub Exploit DB Packet Storm
1632 4.3 MEDIUM
Network 		- - Mattermost Plugins versions <=11.5 11.1.5 10.13.11 11.3.4.0 fail to have API-level checks on which groups the user can create issues or attach comments to which allows a user that is member of multip… CWE-863
 Incorrect Authorization 		CVE-2026-6341 2026-05-19 02:32 2026-05-18 Show GitHub Exploit DB Packet Storm
1633 4.3 MEDIUM
Network 		- - Mattermost Plugins versions <=11.5 11.1.5 10.13.11 11.3.4.0 fail to appropriately check for valid namespaces which allows plugin users to create subscriptions to groups that were not whitelisted via … CWE-863
 Incorrect Authorization 		CVE-2026-6342 2026-05-19 02:32 2026-05-18 Show GitHub Exploit DB Packet Storm
1634 6.5 MEDIUM
Network 		- - Mattermost Plugins versions <=11.5 11.1.5 10.13.11 11.3.4.0 fail to properly check for permissions when processing commands in the Gitlab plugin which allows normal users to uninstall instances or se… CWE-862
 Missing Authorization 		CVE-2026-3117 2026-05-19 02:32 2026-05-18 Show GitHub Exploit DB Packet Storm
1635 6.5 MEDIUM
Network 		- - Mattermost Desktop App versions <=6.1 6.0.1 5.4.13.0 fail to prevent an invalid URL from loading in a pop-up window in the Mattermost Desktop App which allows a malicious server owner to repeated cra… CWE-939
 Improper Authorization in Handler for Custom URL Scheme 		CVE-2026-3471 2026-05-19 02:32 2026-05-18 Show GitHub Exploit DB Packet Storm
1636 3.1 LOW
Network 		- - Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13 fail to check if {{team_id}} was being changed when updating playbooks, allowing users with only {{Manage Playbook Configurations}} permissio… CWE-863
 Incorrect Authorization 		CVE-2026-4286 2026-05-19 02:32 2026-05-18 Show GitHub Exploit DB Packet Storm
1637 3.5 LOW
Network 		- - Mattermost Desktop App versions <=6.1 6.0.1 5.4.13.0 fail to prevent server-rendered content from closing an underlying application view in the Mattermost Desktop App which allows a malicious server … CWE-754
 Improper Check for Unusual or Exceptional Conditions 		CVE-2026-4643 2026-05-19 02:32 2026-05-18 Show GitHub Exploit DB Packet Storm
1638 6.5 MEDIUM
Network 		- - Mattermost versions 11.5.x <= 11.5.1 fail to verify channel membership when processing AI-assisted message rewrites which allows an authenticated attacker to read the content of threads in private ch… CWE-862
 Missing Authorization 		CVE-2026-5163 2026-05-19 02:32 2026-05-18 Show GitHub Exploit DB Packet Storm
1639 4.3 MEDIUM
Network 		- - Mattermost versions 11.5.x <= 11.5.1, 11.4.x <= 11.4.3 fail to validate the X-Requested-With header on the burn-on-read reveal endpoint which allows an authenticated channel member to force the revea… CWE-346
 Origin Validation Error 		CVE-2026-6339 2026-05-19 02:32 2026-05-18 Show GitHub Exploit DB Packet Storm
1640 4.3 MEDIUM
Network 		- - Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to check public/private permissions which allows members without these permissions to access public playbooks via /get… CWE-863
 Incorrect Authorization 		CVE-2026-6343 2026-05-19 02:32 2026-05-18 Show GitHub Exploit DB Packet Storm