{"vulnerability": "CVE-2026-56121", "sightings": [{"uuid": "3f29e321-2226-4534-a7ff-6356b6427a5f", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56121", "type": "seen", "source": "https://bsky.app/profile/securitycyberuk.bsky.social/post/3mp2fgb4nax2n", "content": "\ud83d\udea8  ALERT: CVE-2026-56121\n\nCVSS 9.8/10\n\n\ud83d\udccb WHAT IT IS:\nFeast before 0.63.0 contains an unsafe deserialization vulnerability that allows unauthenticated or unauthorized attackers to achieve remote code execution by sending a crafted gRPC request to the registry server. The user_defined_function.body fi", "creation_timestamp": "2026-06-24T17:02:50.479522Z"}, {"uuid": "443ca282-7ed3-4e62-a2de-e007998f28db", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56121", "type": "seen", "source": "https://bsky.app/profile/cve.skyfleet.blue/post/3mp2ivxcg222z", "content": "CVE-2026-56121 - Feast\nCVE ID : CVE-2026-56121\n \n Published : June 24, 2026, 2:49 p.m. | 2\u00a0hours, 21\u00a0minutes ago\n \n Description : Feast before 0.63.0 contains an unsafe deserialization vulnerability that allows unauthenticated or unauthorized attackers to achieve remote code e...", "creation_timestamp": "2026-06-24T18:05:18.480656Z"}, {"uuid": "18604aa3-5965-4056-a1d4-171c541ea7ba", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56121", "type": "seen", "source": "https://t.me/GithubRedTeam/91260", "content": "\ud83d\udea8 GitHub \u76d1\u63a7\u6d88\u606f\u63d0\u9192\n\n\ud83d\udea8 \u53d1\u73b0\u5173\u952e\u8bcd\uff1a #CVE-2026 #POC #RCE\n\n\ud83d\udce6 \u9879\u76ee\u540d\u79f0\uff1a CVE-2026-56121-Feast-Unauth-RCE\n\ud83d\udc64 \u9879\u76ee\u4f5c\u8005\uff1a BiiTts\n\ud83d\udee0 \u5f00\u53d1\u8bed\u8a00\uff1a Python\n\u2b50 Star\u6570\u91cf\uff1a 0  |  \ud83c\udf74 Fork\u6570\u91cf\uff1a 0\n\ud83d\udcc5 \u66f4\u65b0\u65f6\u95f4\uff1a 2026-06-30 08:27:14\n\n\ud83d\udcdd \u9879\u76ee\u63cf\u8ff0\uff1a\nCVE-2026-56121 \u2014 Feast <0.63.0 unauthenticated RCE via gRPC registry dill.loads of OnDemandFeatureView UDF (pre-auth). Lab + PoC, verified e2e.\n\n\ud83d\udd17 \u70b9\u51fb\u8bbf\u95ee\u9879\u76ee\u5730\u5740", "creation_timestamp": "2026-07-13T22:00:16.735293Z"}, {"uuid": "baa9f8ba-db2f-4bc3-921e-58af6dccf1bb", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56121", "type": "seen", "source": "https://t.me/GithubRedTeam/91260", "content": "\ud83d\udea8 GitHub \u76d1\u63a7\u6d88\u606f\u63d0\u9192\n\n\ud83d\udea8 \u53d1\u73b0\u5173\u952e\u8bcd\uff1a #CVE-2026 #POC #RCE\n\n\ud83d\udce6 \u9879\u76ee\u540d\u79f0\uff1a CVE-2026-56121-Feast-Unauth-RCE\n\ud83d\udc64 \u9879\u76ee\u4f5c\u8005\uff1a BiiTts\n\ud83d\udee0 \u5f00\u53d1\u8bed\u8a00\uff1a Python\n\u2b50 Star\u6570\u91cf\uff1a 0  |  \ud83c\udf74 Fork\u6570\u91cf\uff1a 0\n\ud83d\udcc5 \u66f4\u65b0\u65f6\u95f4\uff1a 2026-06-30 08:27:14\n\n\ud83d\udcdd \u9879\u76ee\u63cf\u8ff0\uff1a\nCVE-2026-56121 \u2014 Feast <0.63.0 unauthenticated RCE via gRPC registry dill.loads of OnDemandFeatureView UDF (pre-auth). Lab + PoC, verified e2e.\n\n\ud83d\udd17 \u70b9\u51fb\u8bbf\u95ee\u9879\u76ee\u5730\u5740", "creation_timestamp": "2026-07-14T00:00:33.304238Z"}, {"uuid": "168ad3ac-e229-40b8-b21a-e22e06a32449", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56121", "type": "published-proof-of-concept", "source": "https://t.me/GithubRedTeam/91260", "content": "\ud83d\udea8 GitHub \u76d1\u63a7\u6d88\u606f\u63d0\u9192\n\n\ud83d\udea8 \u53d1\u73b0\u5173\u952e\u8bcd\uff1a #CVE-2026 #POC #RCE\n\n\ud83d\udce6 \u9879\u76ee\u540d\u79f0\uff1a CVE-2026-56121-Feast-Unauth-RCE\n\ud83d\udc64 \u9879\u76ee\u4f5c\u8005\uff1a BiiTts\n\ud83d\udee0 \u5f00\u53d1\u8bed\u8a00\uff1a Python\n\u2b50 Star\u6570\u91cf\uff1a 0  |  \ud83c\udf74 Fork\u6570\u91cf\uff1a 0\n\ud83d\udcc5 \u66f4\u65b0\u65f6\u95f4\uff1a 2026-06-30 08:27:14\n\n\ud83d\udcdd \u9879\u76ee\u63cf\u8ff0\uff1a\nCVE-2026-56121 \u2014 Feast <0.63.0 unauthenticated RCE via gRPC registry dill.loads of OnDemandFeatureView UDF (pre-auth). Lab + PoC, verified e2e.\n\n\ud83d\udd17 \u70b9\u51fb\u8bbf\u95ee\u9879\u76ee\u5730\u5740", "creation_timestamp": "2026-07-15T00:00:24.486599Z"}, {"uuid": "bad72976-9b4d-4383-89f9-de27f1d59f3e", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56121", "type": "seen", "source": "Telegram/PPrzS3gz9qQLgzr1WoRl3iwYb9bYPZPQYF8TcZKF9BE1m-w", "content": "", "creation_timestamp": "2026-07-16T19:00:26.719323Z"}, {"uuid": "3ecce801-db1e-4136-bea9-0cd035b7e2de", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56121", "type": "seen", "source": "Telegram/kQBPOJZRPfFE-rjb5OWBI31fcS08jxE2VBe_KgzBWEfjeHI", "content": "", "creation_timestamp": "2026-07-16T19:00:26.296085Z"}, {"uuid": "583f7926-0851-459e-90c8-b685281b899c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56121", "type": "seen", "source": "Telegram/kQBPOJZRPfFE-rjb5OWBI31fcS08jxE2VBe_KgzBWEfjeHI", "content": "", "creation_timestamp": "2026-07-17T00:00:42.593058Z"}, {"uuid": "528c0883-f8f7-4449-994e-a13532659e11", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56121", "type": "seen", "source": "Telegram/PPrzS3gz9qQLgzr1WoRl3iwYb9bYPZPQYF8TcZKF9BE1m-w", "content": "", "creation_timestamp": "2026-07-17T00:00:43.103964Z"}, {"uuid": "17f69cca-575f-4625-ac15-69a056713458", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56121", "type": "published-proof-of-concept", "source": "Telegram/kQBPOJZRPfFE-rjb5OWBI31fcS08jxE2VBe_KgzBWEfjeHI", "content": "", "creation_timestamp": "2026-07-18T00:00:08.671970Z"}, {"uuid": "2b80d7e7-9e4c-4c42-87e1-acfac7ea1167", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56121", "type": "published-proof-of-concept", "source": "Telegram/PPrzS3gz9qQLgzr1WoRl3iwYb9bYPZPQYF8TcZKF9BE1m-w", "content": "", "creation_timestamp": "2026-07-18T00:00:08.126053Z"}, {"uuid": "42620b3d-5376-4f1b-94e6-df898d54860e", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56121", "type": "seen", "source": "https://t.me/GithubRedTeam/94792", "content": "\ud83d\udea8 GitHub \u76d1\u63a7\u6d88\u606f\u63d0\u9192\n\n\ud83d\udea8 \u53d1\u73b0\u5173\u952e\u8bcd\uff1a #CVE-2026 #Exploit\n\n\ud83d\udce6 \u9879\u76ee\u540d\u79f0\uff1a CVE-2026-56121_exploit\n\ud83d\udc64 \u9879\u76ee\u4f5c\u8005\uff1a 0xdak\n\ud83d\udee0 \u5f00\u53d1\u8bed\u8a00\uff1a Python\n\u2b50 Star\u6570\u91cf\uff1a 0  |  \ud83c\udf74 Fork\u6570\u91cf\uff1a 0\n\ud83d\udcc5 \u66f4\u65b0\u65f6\u95f4\uff1a 2026-07-23 09:50:12\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": "2026-07-23T12:00:03.136151Z"}, {"uuid": "40d7cdd5-9038-4f16-8d81-7cac0ef6b6ba", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56121", "type": "seen", "source": "Telegram/vvX3qHEz-OxKgnBCQLxVzIYR76LH85lkxYOWve4NS9I7tCI", "content": "", "creation_timestamp": "2026-07-23T17:00:04.000297Z"}, {"uuid": "ab9b17e1-e9a9-48fb-ab12-025d64abc8f1", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56121", "type": "published-proof-of-concept", "source": "https://t.me/GithubRedTeam/94792", "content": "\ud83d\udea8 GitHub \u76d1\u63a7\u6d88\u606f\u63d0\u9192\n\n\ud83d\udea8 \u53d1\u73b0\u5173\u952e\u8bcd\uff1a #CVE-2026 #Exploit\n\n\ud83d\udce6 \u9879\u76ee\u540d\u79f0\uff1a CVE-2026-56121_exploit\n\ud83d\udc64 \u9879\u76ee\u4f5c\u8005\uff1a 0xdak\n\ud83d\udee0 \u5f00\u53d1\u8bed\u8a00\uff1a Python\n\u2b50 Star\u6570\u91cf\uff1a 0  |  \ud83c\udf74 Fork\u6570\u91cf\uff1a 0\n\ud83d\udcc5 \u66f4\u65b0\u65f6\u95f4\uff1a 2026-07-23 09:50:12\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": "2026-07-24T00:00:08.607406Z"}, {"uuid": "7f911fe4-f7f3-4892-bb44-1fd8fec80f06", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-56121", "type": "published-proof-of-concept", "source": "Telegram/vvX3qHEz-OxKgnBCQLxVzIYR76LH85lkxYOWve4NS9I7tCI", "content": "", "creation_timestamp": "2026-07-24T00:00:08.022822Z"}]}