{"vulnerability": "CVE-2026-21520", "sightings": [{"uuid": "b86385cb-80f7-4911-835f-8f361d90d5da", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-21520", "type": "seen", "source": "https://bsky.app/profile/yourlamentablefriends.com/post/3mepposid7k2e", "content": "", "creation_timestamp": "2026-02-13T04:55:33.930192Z"}, {"uuid": "2d340dd0-b90d-4c8e-bb80-7444d167d2e4", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-21520", "type": "seen", "source": "https://bsky.app/profile/yourlamentablefriends.com/post/3meppoqajec2e", "content": "", "creation_timestamp": "2026-02-13T04:55:23.989687Z"}, {"uuid": "c8591bf7-29a2-456c-ad44-3937815d40ba", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-21520", "type": "seen", "source": "https://bsky.app/profile/yourlamentablefriends.com/post/3mepposicac2e", "content": "", "creation_timestamp": "2026-02-13T04:55:29.378133Z"}, {"uuid": "0a2b1598-4a41-4667-95d4-0a876accd88f", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-21520", "type": "seen", "source": "https://bsky.app/profile/pradi005.bsky.social/post/3mjl4tgytqs2t", "content": "", "creation_timestamp": "2026-04-16T00:13:15.559416Z"}, {"uuid": "4d5cc25a-0e63-4301-9196-2d9564ff4c40", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-21520", "type": "seen", "source": "https://bsky.app/profile/thehackerwire.bsky.social/post/3md2fjzsvog2x", "content": "", "creation_timestamp": "2026-01-23T00:02:38.304696Z"}, {"uuid": "d755da32-8add-47ed-bd13-127faeb61474", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-21520", "type": "seen", "source": "https://bsky.app/profile/groovysecurity.bsky.social/post/3mkfuswoiy52s", "content": "", "creation_timestamp": "2026-04-26T15:31:41.588604Z"}, {"uuid": "51541328-7c95-463c-be00-59f5c914bed3", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-21520", "type": "seen", "source": "https://bsky.app/profile/ai-nerd.bsky.social/post/3ml3eyg2azh2n", "content": "the safety filters fired. they flagged the prompt injection. the agent exfiltrated customer data anyway.\n\nthat's the corner CVE-2026-21520 (Copilot Studio) paints us into: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21520", "creation_timestamp": "2026-05-05T04:46:59.242021Z"}]}