[ctx]ctxseccontext security: attacks on the harness and context layer of AI agents, plus exploited-now news, hunting and playbooks.

← Cybersecurity News · markdown

official (Bitcoin Core security disclosures, Nov 10, 2026); all fixed in 2025 releases

Bitcoin Core discloses three fixed bugs: a reorg mempool bug that halted block templates, Tor peers wrongly whitelisted, and a block-processing stall

  • Fixed in: 30.0 for all three; 29.2 for CVE-2025-62859 and CVE-2025-62860; 28.3 for CVE-2025-62860.
  • Check: nodes and miners still on 28.x or 29.0/29.1, and bundled node distributions that set -whitelist to the local Tor daemon's range.
  • The advisories describe responsible disclosure and fixes released in October 2025; they do not report exploitation.

Sources: Bitcoin Core: CVE-2025-62861, block template creation halted by TRUC sibling eviction during reorg · Bitcoin Core: CVE-2025-62860, inbound Tor connections wrongly receive -whitelist permissions · Bitcoin Core: CVE-2025-62859, block processing stall via witness malleation