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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 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
255901	4.3	警告	Opera Software ASA	-	Windows 上で稼働する Opera におけるサービス運用妨害 (DoS) の脆弱性	CWE-399 リソース管理の問題	CVE-2008-5428	2010-09-27 16:07	2008-12-11	Show	GitHub Exploit DB Packet Storm

255902	4.3	警告	Opera Software ASA	-	Opera の Opera.dll 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-2008-4725	2010-09-27 16:07	2008-10-23	Show	GitHub Exploit DB Packet Storm

255903	5.8	警告	Opera Software ASA	-	Opera における新規フィードの購読を作成される脆弱性	CWE-264 認可・権限・アクセス制御	CVE-2008-4698	2010-09-27 16:05	2008-10-23	Show	GitHub Exploit DB Packet Storm

255904	10	危険	Opera Software ASA	-	Windows 上で稼働する Opera における任意のコードを実行される脆弱性	CWE-noinfo 情報不足	CVE-2008-4293	2010-09-27 16:05	2008-09-27	Show	GitHub Exploit DB Packet Storm

255905	10	危険	Opera Software ASA	-	Opera における CRL の更新時の処理に関する脆弱性	CWE-255 CWE-noinfo	CVE-2008-4292	2010-09-27 16:04	2008-09-27	Show	GitHub Exploit DB Packet Storm

255906	6.4	警告	Opera Software ASA	-	Opera における Web スクリプトを含むページの URL をアドレスフィールドに表示される脆弱性	CWE-20 不適切な入力確認	CVE-2008-4200	2010-09-27 16:04	2008-09-27	Show	GitHub Exploit DB Packet Storm

255907	5	警告	Opera Software ASA	-	Opera におけるローカルファイル名の有効性を判別される脆弱性	CWE-200 情報漏えい	CVE-2008-4199	2010-09-27 16:04	2008-09-27	Show	GitHub Exploit DB Packet Storm

255908	7.5	危険	Opera Software ASA	-	Opera における http ページ上で危険な操作を実行させられる脆弱性	CWE-Other その他	CVE-2008-4198	2010-09-27 16:03	2008-09-27	Show	GitHub Exploit DB Packet Storm

255909	9.3	危険	Opera Software ASA	-	Opera における任意のコードを実行される脆弱性	CWE-399 リソース管理の問題	CVE-2008-4197	2010-09-27 16:03	2008-09-27	Show	GitHub Exploit DB Packet Storm

255910	4.3	警告	Opera Software ASA	-	Opera 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-2008-4196	2010-09-27 16:02	2008-09-27	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
195401	4.3	MEDIUM Network	google fedoraproject	chrome fedora	Inappropriate implementation in Skia in Google Chrome prior to 88.0.4324.146 allowed a local attacker to spoof the contents of the Omnibox (URL bar) via a crafted HTML page.	NVD-CWE-noinfo	CVE-2021-21147	2024-11-21 14:47	2021-02-10	Show	GitHub Exploit DB Packet Storm

195402	9.6	CRITICAL Network	google fedoraproject	chrome fedora	Use after free in Navigation in Google Chrome prior to 88.0.4324.146 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.	CWE-416 Use After Free	CVE-2021-21146	2024-11-21 14:47	2021-02-10	Show	GitHub Exploit DB Packet Storm

195403	8.8	HIGH Network	google fedoraproject	chrome fedora	Use after free in Fonts in Google Chrome prior to 88.0.4324.146 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.	CWE-416 Use After Free	CVE-2021-21145	2024-11-21 14:47	2021-02-10	Show	GitHub Exploit DB Packet Storm

195404	8.8	HIGH Network	google fedoraproject	chrome fedora	Heap buffer overflow in Tab Groups in Google Chrome prior to 88.0.4324.146 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a craft…	CWE-787 Out-of-bounds Write	CVE-2021-21144	2024-11-21 14:47	2021-02-10	Show	GitHub Exploit DB Packet Storm

195405	8.8	HIGH Network	google fedoraproject	chrome fedora	Heap buffer overflow in Extensions in Google Chrome prior to 88.0.4324.146 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a craft…	CWE-787 Out-of-bounds Write	CVE-2021-21143	2024-11-21 14:47	2021-02-10	Show	GitHub Exploit DB Packet Storm

195406	9.6	CRITICAL Network	google fedoraproject	chrome fedora	Use after free in Payments in Google Chrome on Mac prior to 88.0.4324.146 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page.	CWE-416 Use After Free	CVE-2021-21142	2024-11-21 14:47	2021-02-10	Show	GitHub Exploit DB Packet Storm

195407	6.5	MEDIUM Network	google microsoft	chrome edge	Insufficient policy enforcement in File System API in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to bypass file extension policy via a crafted HTML page.	CWE-74 Injection	CVE-2021-21141	2024-11-21 14:47	2021-02-9	Show	GitHub Exploit DB Packet Storm

195408	6.8	MEDIUM Physics	google microsoft	chrome edge	Uninitialized use in USB in Google Chrome prior to 88.0.4324.96 allowed a local attacker to potentially perform out of bounds memory access via via a USB device.	CWE-119 Incorrect Access of Indexable Resource ('Range Error')	CVE-2021-21140	2024-11-21 14:47	2021-02-9	Show	GitHub Exploit DB Packet Storm

195409	6.5	MEDIUM Network	google microsoft	chrome edge_chromium	Inappropriate implementation in iframe sandbox in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page.	CWE-1021 Improper Restriction of Rendered UI Layers or Frames	CVE-2021-21139	2024-11-21 14:47	2021-02-9	Show	GitHub Exploit DB Packet Storm

195410	8.6	HIGH Local	google	chrome	Use after free in DevTools in Google Chrome prior to 88.0.4324.96 allowed a local attacker to potentially perform a sandbox escape via a crafted file.	CWE-416 Use After Free	CVE-2021-21138	2024-11-21 14:47	2021-02-9	Show	GitHub Exploit DB Packet Storm

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