{"vulnerability": "CVE-2026-50257", "sightings": [{"uuid": "6893a8f1-5bb3-4198-ab7c-e2cdfd051f00", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-50257", "type": "seen", "source": "https://bsky.app/profile/cve.skyfleet.blue/post/3mnk72bll7m2v", "content": "CVE-2026-50257 - Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in misyncdestroyfence()\nCVE ID : CVE-2026-50257\n \n Published : June 5, 2026, 12:16 p.m. | 16\u00a0minutes ago\n \n Description : A use-after-free flaw was found in the X.Org X server and Xwayl...", "creation_timestamp": "2026-06-05T13:00:58.578544Z"}, {"uuid": "806784c3-133e-4e91-bf36-7b576a827365", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-50257", "type": "seen", "source": "https://bsky.app/profile/xlibredev.bsky.social/post/3mnnpspspy22m", "content": "We released the #XLibre Xserver 25.0.0.24 and 25.1.6 on Jun 05 containing #security fixes for CVE-2026-50256, CVE-2026-50257, CVE-2026-50258, CVE-2026-50259, CVE-2026-50260, CVE-2026-50261, CVE-2026-50262, and CVE-2026-50263. #CVE github.com/X11Libre/xse... github.com/X11Libre/xse...", "creation_timestamp": "2026-06-06T22:39:01.514899Z"}, {"uuid": "eeb623f8-a9d2-4a4e-a3a6-03a92b6249c7", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-50257", "type": "seen", "source": "https://bsky.app/profile/xlibredev.bsky.social/post/3mnnpssgxc22m", "content": "We released the #XLibre Xserver 25.0.0.24 and 25.1.6 on Jun 05 containing #security fixes for CVE-2026-50256, CVE-2026-50257, CVE-2026-50258, CVE-2026-50259, CVE-2026-50260, CVE-2026-50261, CVE-2026-50262, and CVE-2026-50263. #CVE github.com/X11Libre/xse... github.com/X11Libre/xse...", "creation_timestamp": "2026-06-06T22:39:03.057720Z"}, {"uuid": "528ea78d-0735-4329-ae5d-913a82391ea9", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-50257", "type": "seen", "source": "https://bsky.app/profile/kriptabiz.bsky.social/post/3mqj2xv45kv2i", "content": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c CVE-2026-50257: Use-after-free \u0432 X.Org X Server \u0438 Xwayland - \u0443\u0433\u0440\u043e\u0437\u0430 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 Linux\n\n\n\nhttps://kripta.biz/posts/917E7C6C-F4E8-460F-8FD0-6F0EBC3DA458", "creation_timestamp": "2026-07-13T06:30:58.731873Z"}, {"uuid": "fbcd42f5-d767-4385-965a-75ca89d0fdee", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-50257", "type": "seen", "source": "https://bsky.app/profile/kriptabiz.bsky.social/post/3mqjvjnibqv2a", "content": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c CVE-2026-50257: \u043e\u043f\u0430\u0441\u043d\u044b\u0439 use-after-free \u0432 X.Org \u0438 Xwayland\n\n\n\nhttps://kripta.biz/posts/CD73D6AF-EB2C-418C-B4BE-231721C77135", "creation_timestamp": "2026-07-13T14:26:12.548852Z"}, {"uuid": "894b2ecc-8d1d-432b-b1dd-8fa23fab5392", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-50257", "type": "seen", "source": "https://bsky.app/profile/khesefxyz.bsky.social/post/3mqqqufkouj23", "content": "\u05d4\u05e4\u05d2\u05d9\u05e2\u05d4 \u05d4\u05e7\u05e8\u05d9\u05d8\u05d9\u05ea CVE-2026-50257: \u05de\u05d4 \u05d6\u05d4, \u05db\u05d9\u05e6\u05d3 \u05d4\u05d9\u05d0 \u05e4\u05d5\u05e2\u05dc\u05ea, \u05d5\u05de\u05d4 \u05e2\u05dc\u05d9\u05db\u05dd \u05dc\u05e2\u05e9\u05d5\u05ea?\n\n\n\nhttps://khesef.xyz/posts/18BB0DBB-C981-434B-8938-08DA0F5AF062", "creation_timestamp": "2026-07-16T07:51:22.159352Z"}]}