Spoofing — PoC Archivehttps://poc.intelseclab.com/tags/spoofing/Latest proof-of-concept entries.Hugoen-usSun, 05 Jul 2026 00:00:00 +0000dnsmasq EDNS Client Subnet (ECS) Response Validation Bypass (CVE-2026-4893)https://poc.intelseclab.com/pocs/network/2026-07-05_cve-2026-4893-dnsmasq-ecs-spoofing/Sun, 05 Jul 2026 00:00:00 +0000https://poc.intelseclab.com/pocs/network/2026-07-05_cve-2026-4893-dnsmasq-ecs-spoofing/Medium severity — network · CVE-2026-4893. Status: PoC. Affects: dnsmasq (DNS forwarder/cache). Tags: dnsmasq, dns, edns, ecs, rfc7871, cache-poisoning, spoofing, udp.networkMediumdnsmasqdnsednsecsrfc7871cache-poisoningspoofingudpNodeBB ActivityPub attributedTo Local UID Spoofhttps://poc.intelseclab.com/pocs/web/2026-07-03_nodebb-activitypub-uid-spoof/Fri, 03 Jul 2026 00:00:00 +0000https://poc.intelseclab.com/pocs/web/2026-07-03_nodebb-activitypub-uid-spoof/High severity — web · None assigned as of 2026-07-03. Status: PoC. Affects: NodeBB — ActivityPub server-to-server inbox. Tags: nodebb, activitypub, federation, authentication-bypass, spoofing, uid-forgery, forum-software, nodejs.webHighnodebbactivitypubfederationauthentication-bypassspoofinguid-forgeryforum-softwarenodejs