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You can search for vulnerabilities managed by JVN (Japan Vulnerability Note) and NVD (National Vulnerability Database).
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To search by CWE, please refer to the CWE Overview and check the CWE number.

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JVN Vulnerability Information

Update Date":June 16, 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
258361 5.8 警告 Opera Software ASA - Windows 上で稼働する Opera におけるアドレスフィールドを偽装される脆弱性 CWE-20
不適切な入力確認 		CVE-2009-3832 2010-09-27 16:16 2009-10-28 Show GitHub Exploit DB Packet Storm
258362 5 警告 Opera Software ASA - Opera におけるフィッシング攻撃の脆弱性 CWE-Other
その他 		CVE-2009-3049 2010-09-27 16:15 2009-09-1 Show GitHub Exploit DB Packet Storm
258363 4.3 警告 Opera Software ASA - Opera における意図しないファイルをアップロードさせられる脆弱性 CWE-20
不適切な入力確認 		CVE-2009-3048 2010-09-27 16:15 2009-09-1 Show GitHub Exploit DB Packet Storm
258364 4.3 警告 Opera Software ASA - Opera における URL を偽装される脆弱性 CWE-Other
その他 		CVE-2009-3047 2010-09-27 16:15 2009-09-1 Show GitHub Exploit DB Packet Storm
258365 5 警告 Opera Software ASA - Opera における証明書チェーンの有効性を回避される脆弱性 CWE-264
認可・権限・アクセス制御 		CVE-2009-3046 2010-09-27 16:15 2009-09-1 Show GitHub Exploit DB Packet Storm
258366 5 警告 Opera Software ASA - Opera における任意の SSL サーバになりすまされる脆弱性 CWE-310
暗号の問題 		CVE-2009-3045 2010-09-27 16:15 2009-09-1 Show GitHub Exploit DB Packet Storm
258367 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-94
コード・インジェクション 		CVE-2009-3831 2010-09-27 16:14 2009-10-28 Show GitHub Exploit DB Packet Storm
258368 5 警告 Opera Software ASA - 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-2009-3269 2010-09-27 16:14 2009-09-18 Show GitHub Exploit DB Packet Storm
258369 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-2009-3266 2010-09-27 16:14 2009-09-18 Show GitHub Exploit DB Packet Storm
258370 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-2009-3265 2010-09-27 16:14 2009-09-18 Show GitHub Exploit DB Packet Storm
NVD Vulnerability Information

Update Date:June 16, 2026, 4:13 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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211551 8.8 HIGH
Network 		mozilla firefox
firefox_esr
thunderbird 		Mozilla developers reported memory safety bugs present in Firefox 82 and Firefox ESR 78.4. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these… CWE-787
 Out-of-bounds Write 		CVE-2020-26968 2024-11-21 14:20 2020-12-9 Show GitHub Exploit DB Packet Storm
211552 6.5 MEDIUM
Network 		mozilla firefox When listening for page changes with a Mutation Observer, a malicious web page could confuse Firefox Screenshots into interacting with elements other than those that it injected into the page. This w… NVD-CWE-noinfo
CVE-2020-26967 2024-11-21 14:20 2020-12-9 Show GitHub Exploit DB Packet Storm
211553 6.5 MEDIUM
Network 		mozilla firefox
firefox_esr
thunderbird 		Searching for a single word from the address bar caused an mDNS request to be sent on the local network searching for a hostname consisting of that string; resulting in an information leak. *Note: Th… NVD-CWE-Other
CVE-2020-26966 2024-11-21 14:20 2020-12-9 Show GitHub Exploit DB Packet Storm
211554 4.3 MEDIUM
Network 		mozilla firefox Repeated calls to the history and location interfaces could have been used to hang the browser. This was addressed by introducing rate-limiting to these API calls. This vulnerability affects Firefox … NVD-CWE-noinfo
CVE-2020-26963 2024-11-21 14:20 2020-12-9 Show GitHub Exploit DB Packet Storm
211555 6.5 MEDIUM
Network 		mozilla firefox
firefox_esr
thunderbird 		Some websites have a feature "Show Password" where clicking a button will change a password field into a textbook field, revealing the typed password. If, when using a software keyboard that remember… CWE-212
 Improper Removal of Sensitive Information Before Storage or Transfer 		CVE-2020-26965 2024-11-21 14:20 2020-12-9 Show GitHub Exploit DB Packet Storm
211556 6.8 MEDIUM
Network 		mozilla firefox If the Remote Debugging via USB feature was enabled in Firefox for Android on an Android version prior to Android 6.0, untrusted apps could have connected to the feature and operated with the privile… NVD-CWE-noinfo
CVE-2020-26964 2024-11-21 14:20 2020-12-9 Show GitHub Exploit DB Packet Storm
211557 6.1 MEDIUM
Network 		mozilla firefox Cross-origin iframes that contained a login form could have been recognized by the login autofill service, and populated. This could have been used in clickjacking attacks, as well as be read across … CWE-1021
 Improper Restriction of Rendered UI Layers or Frames 		CVE-2020-26962 2024-11-21 14:20 2020-12-9 Show GitHub Exploit DB Packet Storm
211558 6.5 MEDIUM
Network 		mozilla firefox
firefox_esr
thunderbird 		When DNS over HTTPS is in use, it intentionally filters RFC1918 and related IP ranges from the responses as these do not make sense coming from a DoH resolver. However when an IPv4 address was mapped… NVD-CWE-noinfo
CVE-2020-26961 2024-11-21 14:20 2020-12-9 Show GitHub Exploit DB Packet Storm
211559 8.8 HIGH
Network 		mozilla firefox
firefox_esr
thunderbird 		If the Compact() method was called on an nsTArray, the array could have been reallocated without updating other pointers, leading to a potential use-after-free and exploitable crash. This vulnerabili… CWE-416
 Use After Free 		CVE-2020-26960 2024-11-21 14:20 2020-12-9 Show GitHub Exploit DB Packet Storm
211560 8.8 HIGH
Network 		mozilla firefox
firefox_esr
thunderbird 		During browser shutdown, reference decrementing could have occured on a previously freed object, resulting in a use-after-free, memory corruption, and a potentially exploitable crash. This vulnerabil… CWE-416
 Use After Free 		CVE-2020-26959 2024-11-21 14:20 2020-12-9 Show GitHub Exploit DB Packet Storm