{"vulnerability": "CVE-2026-59880", "sightings": [{"uuid": "d58d6581-4d00-4159-a771-0c59598d294b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-59880", "type": "seen", "source": "https://bsky.app/profile/cve.skyfleet.blue/post/3mq5q4e2tph25", "content": "CVE-2026-59880 - Immutable.js: Hash-collision algorithmic complexity denial of service in Immutable.Map/Set\nCVE ID : CVE-2026-59880\n \n Published : July 8, 2026, 4:16 p.m. | 58\u00a0minutes ago\n \n Description : Immutable.js provides many Persistent Immutable data structures. Prior t...", "creation_timestamp": "2026-07-08T18:17:20.380008Z"}, {"uuid": "5b91ec24-a223-461b-abc3-ba270515cf79", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-59880", "type": "seen", "source": "https://bsky.app/profile/cyberhub.blog/post/3mqeb3l7qsu26", "content": "\ud83d\udccc CVE-2026-59880 - Immutable.js provides many Persistent Immutable data structures. Prior to 4.3.9 and 5.1.8, Immutable.Map and Immutable.Set keep keys that share the sa... https://www.cyberhub.blog/cves/CVE-2026-59880", "creation_timestamp": "2026-07-11T08:37:06.160634Z"}, {"uuid": "85284c89-410e-4139-8adf-0ed119e489af", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2026-59880", "type": "published-proof-of-concept", "source": "https://github.com/immutable-js/immutable-js/security/advisories/GHSA-xvcm-6775-5m9r", "content": "", "creation_timestamp": "2026-07-21T20:35:16.277082Z"}, {"uuid": "75e7ff12-18f7-411f-be66-c91e469db6c8", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-59880", "type": "seen", "source": "Telegram/3IdoSx-1lpc2iHoFvsp2wYXyVxuQva2z_1gsDIpvcW15f6s", "content": "", "creation_timestamp": "2026-07-23T23:00:03.348813Z"}, {"uuid": "2a4c6aa3-028b-45b7-bad6-7683050c3f60", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-59880", "type": "seen", "source": "Telegram/3IdoSx-1lpc2iHoFvsp2wYXyVxuQva2z_1gsDIpvcW15f6s", "content": "", "creation_timestamp": "2026-07-24T00:00:07.219054Z"}]}