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  <id>https://vulnerability.circl.lu/sightings/feed</id>
  <title>Most recent sightings.</title>
  <updated>2026-09-13T00:54:26.251893+00:00</updated>
  <author>
    <name>Vulnerability-Lookup</name>
    <email>info@circl.lu</email>
  </author>
  <link href="https://vulnerability.circl.lu" rel="alternate"/>
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  <subtitle>Contains only the most 10 recent sightings.</subtitle>
  <entry>
    <id>https://vulnerability.circl.lu/sighting/919abfe2-8b04-4727-a343-7bbf38eaefeb/export</id>
    <title>919abfe2-8b04-4727-a343-7bbf38eaefeb</title>
    <updated>2026-09-13T00:54:26.278903+00:00</updated>
    <author>
      <name>Automation user</name>
      <uri>https://cvepremium.circl.lu/user/automation</uri>
    </author>
    <content>{"uuid": "919abfe2-8b04-4727-a343-7bbf38eaefeb", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-83991", "type": "published-proof-of-concept", "source": "https://t.me/GithubRedTeam/101958", "content": "\ud83d\udea8 GitHub \u76d1\u63a7\u6d88\u606f\u63d0\u9192\n\n\ud83d\udea8 \u53d1\u73b0\u5173\u952e\u8bcd\uff1a #CVE-2026 #POC\n\n\ud83d\udce6 \u9879\u76ee\u540d\u79f0\uff1a CVE-2026-83991-WriteUP-and-PoC\n\ud83d\udc64 \u9879\u76ee\u4f5c\u8005\uff1a ZeroDayVPN\n\ud83d\udee0 \u5f00\u53d1\u8bed\u8a00\uff1a Unknown\n\u2b50 Star\u6570\u91cf\uff1a 0  |  \ud83c\udf74 Fork\u6570\u91cf\uff1a 0\n\ud83d\udcc5 \u66f4\u65b0\u65f6\u95f4\uff1a 2026-09-10 16:11:55\n\n\ud83d\udcdd \u9879\u76ee\u63cf\u8ff0\uff1a\n\u65e0\u63cf\u8ff0\n\n\ud83d\udd17 \u70b9\u51fb\u8bbf\u95ee\u9879\u76ee\u5730\u5740", "creation_timestamp": "2026-09-11T00:00:27.983214Z"}</content>
    <link href="https://vulnerability.circl.lu/sighting/919abfe2-8b04-4727-a343-7bbf38eaefeb/export"/>
    <published>2026-09-11T00:00:27.983214+00:00</published>
  </entry>
  <entry>
    <id>https://vulnerability.circl.lu/sighting/41c705cc-e0a9-4d61-989f-443989ac56b0/export</id>
    <title>41c705cc-e0a9-4d61-989f-443989ac56b0</title>
    <updated>2026-09-13T00:54:26.281120+00:00</updated>
    <author>
      <name>Automation user</name>
      <uri>https://cvepremium.circl.lu/user/automation</uri>
    </author>
    <content>{"uuid": "41c705cc-e0a9-4d61-989f-443989ac56b0", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-83991", "type": "seen", "source": "https://t.me/GithubRedTeam/101958", "content": "\ud83d\udea8 GitHub \u76d1\u63a7\u6d88\u606f\u63d0\u9192\n\n\ud83d\udea8 \u53d1\u73b0\u5173\u952e\u8bcd\uff1a #CVE-2026 #POC\n\n\ud83d\udce6 \u9879\u76ee\u540d\u79f0\uff1a CVE-2026-83991-WriteUP-and-PoC\n\ud83d\udc64 \u9879\u76ee\u4f5c\u8005\uff1a ZeroDayVPN\n\ud83d\udee0 \u5f00\u53d1\u8bed\u8a00\uff1a Unknown\n\u2b50 Star\u6570\u91cf\uff1a 0  |  \ud83c\udf74 Fork\u6570\u91cf\uff1a 0\n\ud83d\udcc5 \u66f4\u65b0\u65f6\u95f4\uff1a 2026-09-10 16:11:55\n\n\ud83d\udcdd \u9879\u76ee\u63cf\u8ff0\uff1a\n\u65e0\u63cf\u8ff0\n\n\ud83d\udd17 \u70b9\u51fb\u8bbf\u95ee\u9879\u76ee\u5730\u5740", "creation_timestamp": "2026-09-10T20:00:09.801720Z"}</content>
    <link href="https://vulnerability.circl.lu/sighting/41c705cc-e0a9-4d61-989f-443989ac56b0/export"/>
    <published>2026-09-10T20:00:09.801720+00:00</published>
  </entry>
  <entry>
    <id>https://vulnerability.circl.lu/sighting/7354cf21-f999-42e8-bb98-d20ad30e0ebe/export</id>
    <title>7354cf21-f999-42e8-bb98-d20ad30e0ebe</title>
    <updated>2026-09-13T00:54:26.281207+00:00</updated>
    <author>
      <name>Automation user</name>
      <uri>https://cvepremium.circl.lu/user/automation</uri>
    </author>
    <content>{"uuid": "7354cf21-f999-42e8-bb98-d20ad30e0ebe", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-83991", "type": "published-proof-of-concept", "source": "Telegram/XaMpjSHHxdFz0-yBA1eCpiXEPPhqtMXTtWzkO6WcDw_ZaaU", "content": "", "creation_timestamp": "2026-09-10T00:00:53.446665Z"}</content>
    <link href="https://vulnerability.circl.lu/sighting/7354cf21-f999-42e8-bb98-d20ad30e0ebe/export"/>
    <published>2026-09-10T00:00:53.446665+00:00</published>
  </entry>
  <entry>
    <id>https://vulnerability.circl.lu/sighting/64360b3f-2667-45ab-8839-c9264f7a8fba/export</id>
    <title>64360b3f-2667-45ab-8839-c9264f7a8fba</title>
    <updated>2026-09-13T00:54:26.281273+00:00</updated>
    <author>
      <name>Automation user</name>
      <uri>https://cvepremium.circl.lu/user/automation</uri>
    </author>
    <content>{"uuid": "64360b3f-2667-45ab-8839-c9264f7a8fba", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-83991", "type": "published-proof-of-concept", "source": "https://t.me/GithubRedTeam/101743", "content": "\ud83d\udea8 GitHub \u76d1\u63a7\u6d88\u606f\u63d0\u9192\n\n\ud83d\udea8 \u53d1\u73b0\u5173\u952e\u8bcd\uff1a #CVE-2026 #POC\n\n\ud83d\udce6 \u9879\u76ee\u540d\u79f0\uff1a CVE-2026-83991-writeup-and-poc\n\ud83d\udc64 \u9879\u76ee\u4f5c\u8005\uff1a karollooool\n\ud83d\udee0 \u5f00\u53d1\u8bed\u8a00\uff1a C\n\u2b50 Star\u6570\u91cf\uff1a 1  |  \ud83c\udf74 Fork\u6570\u91cf\uff1a 0\n\ud83d\udcc5 \u66f4\u65b0\u65f6\u95f4\uff1a 2026-09-09 01:47:32\n\n\ud83d\udcdd \u9879\u76ee\u63cf\u8ff0\uff1a\nhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83991\n\n\ud83d\udd17 \u70b9\u51fb\u8bbf\u95ee\u9879\u76ee\u5730\u5740", "creation_timestamp": "2026-09-10T00:00:51.108765Z"}</content>
    <link href="https://vulnerability.circl.lu/sighting/64360b3f-2667-45ab-8839-c9264f7a8fba/export"/>
    <published>2026-09-10T00:00:51.108765+00:00</published>
  </entry>
  <entry>
    <id>https://vulnerability.circl.lu/sighting/424cfb4f-d660-4ae8-b024-255739ab60ae/export</id>
    <title>424cfb4f-d660-4ae8-b024-255739ab60ae</title>
    <updated>2026-09-13T00:54:26.281343+00:00</updated>
    <author>
      <name>Automation user</name>
      <uri>https://cvepremium.circl.lu/user/automation</uri>
    </author>
    <content>{"uuid": "424cfb4f-d660-4ae8-b024-255739ab60ae", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-83991", "type": "published-proof-of-concept", "source": "Telegram/S_xvhEYkSfwY-06pFLtOx1--AsX0A_rgUo_9aHBHntliw8A", "content": "", "creation_timestamp": "2026-09-10T00:00:45.033305Z"}</content>
    <link href="https://vulnerability.circl.lu/sighting/424cfb4f-d660-4ae8-b024-255739ab60ae/export"/>
    <published>2026-09-10T00:00:45.033305+00:00</published>
  </entry>
  <entry>
    <id>https://vulnerability.circl.lu/sighting/3821f455-0622-43db-84bd-3877a84b7927/export</id>
    <title>3821f455-0622-43db-84bd-3877a84b7927</title>
    <updated>2026-09-13T00:54:26.281407+00:00</updated>
    <author>
      <name>Automation user</name>
      <uri>https://cvepremium.circl.lu/user/automation</uri>
    </author>
    <content>{"uuid": "3821f455-0622-43db-84bd-3877a84b7927", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-83991", "type": "seen", "source": "https://bsky.app/profile/obivan.infosec.exchange.ap.brid.gy/post/3mv3kbozt2gd2", "content": "CVE-2026-83991: Windows Cloud Files access-check bypass https://github.com/karollooool/CVE-2026-83991-writeup-and-poc", "creation_timestamp": "2026-09-09T12:33:57.158741Z"}</content>
    <link href="https://vulnerability.circl.lu/sighting/3821f455-0622-43db-84bd-3877a84b7927/export"/>
    <published>2026-09-09T12:33:57.158741+00:00</published>
  </entry>
  <entry>
    <id>https://vulnerability.circl.lu/sighting/380bd035-819c-4ed5-b6bd-ae1a2ff3d9f1/export</id>
    <title>380bd035-819c-4ed5-b6bd-ae1a2ff3d9f1</title>
    <updated>2026-09-13T00:54:26.281469+00:00</updated>
    <author>
      <name>Automation user</name>
      <uri>https://cvepremium.circl.lu/user/automation</uri>
    </author>
    <content>{"uuid": "380bd035-819c-4ed5-b6bd-ae1a2ff3d9f1", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-83991", "type": "seen", "source": "https://infosec.exchange/users/obivan/statuses/117241099867095412", "content": "CVE-2026-83991: Windows Cloud Files access-check bypass https://github.com/karollooool/CVE-2026-83991-writeup-and-poc", "creation_timestamp": "2026-09-09T12:33:33.645800Z"}</content>
    <link href="https://vulnerability.circl.lu/sighting/380bd035-819c-4ed5-b6bd-ae1a2ff3d9f1/export"/>
    <published>2026-09-09T12:33:33.645800+00:00</published>
  </entry>
  <entry>
    <id>https://vulnerability.circl.lu/sighting/014d714e-c3f0-41dd-a82f-623f02adabd9/export</id>
    <title>014d714e-c3f0-41dd-a82f-623f02adabd9</title>
    <updated>2026-09-13T00:54:26.281530+00:00</updated>
    <author>
      <name>Joseph Lee</name>
      <uri>https://cvepremium.circl.lu/user/syspect</uri>
    </author>
    <content>{"uuid": "014d714e-c3f0-41dd-a82f-623f02adabd9", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2026-83991", "type": "seen", "source": "https://www.acn.gov.it/portale/w/aggiornamenti-mensili-microsoft-24", "content": "", "creation_timestamp": "2026-09-09T10:56:34.066744Z"}</content>
    <link href="https://vulnerability.circl.lu/sighting/014d714e-c3f0-41dd-a82f-623f02adabd9/export"/>
    <published>2026-09-09T10:56:34.066744+00:00</published>
  </entry>
  <entry>
    <id>https://vulnerability.circl.lu/sighting/3aab8f9d-ca96-4272-a73e-1fb1792cdffd/export</id>
    <title>3aab8f9d-ca96-4272-a73e-1fb1792cdffd</title>
    <updated>2026-09-13T00:54:26.282294+00:00</updated>
    <author>
      <name>Automation user</name>
      <uri>https://cvepremium.circl.lu/user/automation</uri>
    </author>
    <content>{"uuid": "3aab8f9d-ca96-4272-a73e-1fb1792cdffd", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-83991", "type": "seen", "source": "Telegram/S_xvhEYkSfwY-06pFLtOx1--AsX0A_rgUo_9aHBHntliw8A", "content": "", "creation_timestamp": "2026-09-09T10:00:06.107030Z"}</content>
    <link href="https://vulnerability.circl.lu/sighting/3aab8f9d-ca96-4272-a73e-1fb1792cdffd/export"/>
    <published>2026-09-09T10:00:06.107030+00:00</published>
  </entry>
  <entry>
    <id>https://vulnerability.circl.lu/sighting/78d05043-4110-43b4-81a5-bb3468b5a112/export</id>
    <title>78d05043-4110-43b4-81a5-bb3468b5a112</title>
    <updated>2026-09-13T00:54:26.282373+00:00</updated>
    <author>
      <name>Automation user</name>
      <uri>https://cvepremium.circl.lu/user/automation</uri>
    </author>
    <content>{"uuid": "78d05043-4110-43b4-81a5-bb3468b5a112", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-83991", "type": "seen", "source": "https://t.me/GithubRedTeam/101743", "content": "\ud83d\udea8 GitHub \u76d1\u63a7\u6d88\u606f\u63d0\u9192\n\n\ud83d\udea8 \u53d1\u73b0\u5173\u952e\u8bcd\uff1a #CVE-2026 #POC\n\n\ud83d\udce6 \u9879\u76ee\u540d\u79f0\uff1a CVE-2026-83991-writeup-and-poc\n\ud83d\udc64 \u9879\u76ee\u4f5c\u8005\uff1a karollooool\n\ud83d\udee0 \u5f00\u53d1\u8bed\u8a00\uff1a C\n\u2b50 Star\u6570\u91cf\uff1a 1  |  \ud83c\udf74 Fork\u6570\u91cf\uff1a 0\n\ud83d\udcc5 \u66f4\u65b0\u65f6\u95f4\uff1a 2026-09-09 01:47:32\n\n\ud83d\udcdd \u9879\u76ee\u63cf\u8ff0\uff1a\nhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83991\n\n\ud83d\udd17 \u70b9\u51fb\u8bbf\u95ee\u9879\u76ee\u5730\u5740", "creation_timestamp": "2026-09-09T05:00:04.959197Z"}</content>
    <link href="https://vulnerability.circl.lu/sighting/78d05043-4110-43b4-81a5-bb3468b5a112/export"/>
    <published>2026-09-09T05:00:04.959197+00:00</published>
  </entry>
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