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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
421 4.3 警告
Network 		Mattermost, Inc. Mattermost Server Mattermost, Inc.のMattermost Serverにおける認証の欠如に関する脆弱性 CWE-862
認証の欠如 		CVE-2026-3637 2026-05-21 10:52 2026-05-18 Show GitHub Exploit DB Packet Storm
422 9.8 緊急
Network 		H2O.ai H2O H2O.aiのH2Oにおけるコードインジェクションの脆弱性 CWE-94
コード・インジェクション 		CVE-2026-3960 2026-05-21 10:52 2026-04-23 Show GitHub Exploit DB Packet Storm
423 8.4 重要
Local 		マイクロソフト Microsoft 365 Apps
Microsoft Office
Office Long Term Servicing Channel (LTSC) 		Microsoft Office のリモート コードが実行される脆弱性 CWE-416
解放済みメモリの使用 		CVE-2026-40358 2026-05-21 10:52 2026-05-12 Show GitHub Exploit DB Packet Storm
424 7.8 重要
Local 		マイクロソフト Microsoft Office Online Server
Microsoft Excel
Microsoft Office
Office Long Term Servicing Channel (LTSC)
Microsoft 365 Apps 		Microsoft Excel のリモートでコードが実行される脆弱性 CWE-416
解放済みメモリの使用 		CVE-2026-40359 2026-05-21 10:52 2026-05-12 Show GitHub Exploit DB Packet Storm
425 7.8 重要
Local 		マイクロソフト Microsoft Office Online Server
Microsoft Excel
Microsoft Office
Office Long Term Servicing Channel (LTSC)
Microsoft 365 Apps 		Microsoft Excel の情報漏えいの脆弱性 CWE-125
境界外読み取り 		CVE-2026-40360 2026-05-21 10:52 2026-05-12 Show GitHub Exploit DB Packet Storm
426 8.4 重要
Local 		マイクロソフト Microsoft 365 Apps
Microsoft Office
Microsoft Word
Office Long Term Servicing Channel (LTSC) 		Microsoft Word のリモートでコードが実行される脆弱性 CWE-416
解放済みメモリの使用 		CVE-2026-40361 2026-05-21 10:52 2026-05-12 Show GitHub Exploit DB Packet Storm
427 7.8 重要
Local 		マイクロソフト Microsoft Office Online Server
Microsoft Excel
Microsoft Office
Office Long Term Servicing Channel (LTSC)
Microsoft 365 Apps 		Microsoft Excel のリモートでコードが実行される脆弱性 CWE-122
ヒープオーバーフロー 		CVE-2026-40362 2026-05-21 10:52 2026-05-12 Show GitHub Exploit DB Packet Storm
428 8.4 重要
Local 		マイクロソフト Microsoft 365 Apps
Microsoft Office
Office Long Term Servicing Channel (LTSC) 		Microsoft Office のリモート コードが実行される脆弱性 CWE-122
ヒープオーバーフロー 		CVE-2026-40363 2026-05-21 10:52 2026-05-12 Show GitHub Exploit DB Packet Storm
429 8.4 重要
Local 		マイクロソフト Microsoft 365 Apps
Microsoft Office
Microsoft Word
Office Long Term Servicing Channel (LTSC) 		Microsoft Word のリモートでコードが実行される脆弱性 CWE-122
CWE-843
CWE-908
CVE-2026-40364 2026-05-21 10:52 2026-05-12 Show GitHub Exploit DB Packet Storm
430 8.4 重要
Local 		マイクロソフト Microsoft 365 Apps
Microsoft Office
Microsoft Word
Office Long Term Servicing Channel (LTSC) 		Microsoft Word のリモートでコードが実行される脆弱性 CWE-416
解放済みメモリの使用 		CVE-2026-40366 2026-05-21 10:52 2026-05-12 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
1201 7.3 HIGH
Network 		mozilla firefox
thunderbird 		Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. CWE-416
 Use After Free 		CVE-2026-8947 2026-05-20 03:47 2026-05-19 Show GitHub Exploit DB Packet Storm
1202 9.6 CRITICAL
Network 		mozilla firefox
thunderbird 		Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140… CWE-416
 Use After Free 		CVE-2026-8953 2026-05-20 03:45 2026-05-19 Show GitHub Exploit DB Packet Storm
1203 7.5 HIGH
Network 		mozilla firefox
thunderbird 		Incorrect boundary conditions, integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11. CWE-119
Incorrect Access of Indexable Resource ('Range Error')  		CVE-2026-8954 2026-05-20 03:42 2026-05-19 Show GitHub Exploit DB Packet Storm
1204 4.3 MEDIUM
Network 		microsoft 365_apps
office
office_long_term_servicing_channel
word 		External control of file name or path in Microsoft Office Word allows an unauthorized attacker to disclose information over a network. CWE-73
 External Control of File Name or Path 		CVE-2026-40421 2026-05-20 03:38 2026-05-13 Show GitHub Exploit DB Packet Storm
1205 7.8 HIGH
Local 		microsoft office
office_long_term_servicing_channel 		Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally. CWE-122
Heap-based Buffer Overflow 		CVE-2026-42831 2026-05-20 03:38 2026-05-13 Show GitHub Exploit DB Packet Storm
1206 5.5 MEDIUM
Local 		microsoft excel
office
office_long_term_servicing_channel
word 		Improper access control in Microsoft Office allows an unauthorized attacker to perform spoofing locally. CWE-284
NVD-CWE-noinfo
Improper Access Control 		CVE-2026-42832 2026-05-20 03:38 2026-05-13 Show GitHub Exploit DB Packet Storm
1207 7.5 HIGH
Network 		h2o h2o A vulnerability was identified in h2oai h2o-3 up to 7402. Affected by this issue is the function importFiles of the file h2o-core/src/main/java/water/persist/PersistNFS.java of the component ImportFi… CWE-200
CWE-284
NVD-CWE-noinfo
Information Exposure
Improper Access Control 		CVE-2026-8750 2026-05-20 03:22 2026-05-17 Show GitHub Exploit DB Packet Storm
1208 6.5 MEDIUM
Network 		- - Audiobookshelf is a self-hosted audiobook and podcast server. Prior to 2.32.2, the GET /api/libraries/:id/download endpoint validates that the requesting user has access to the library specified in t… CWE-863
 Incorrect Authorization 		CVE-2026-42883 2026-05-20 03:19 2026-05-12 Show GitHub Exploit DB Packet Storm
1209 6.2 MEDIUM
Network 		- - LobeHub is a work-and-lifestyle space to find, build, and collaborate with agent teammates that grow with you. Prior to 2.1.48, when LobeChat processes custom tags in the Render process of src/featur… CWE-79
Cross-site Scripting 		CVE-2026-42045 2026-05-20 03:19 2026-05-13 Show GitHub Exploit DB Packet Storm
1210 9.8 CRITICAL
Network 		mozilla firefox Sandbox escape in the Profile Backup component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11. CWE-693
 Protection Mechanism Failure 		CVE-2026-8401 2026-05-20 03:16 2026-05-13 Show GitHub Exploit DB Packet Storm