Bitcoin Core discloses high-risk CVE-2025-62861 affecting versions 28.0-28.2 and 29.0-29.1

Nov 11, 2026 01:41 (4h ago)

Verifying

Bitcoin Core disclosed vulnerability CVE-2025-62861 affecting versions 28.0-28.2 and 29.0-29.1.
The flaw can prevent affected nodes from creating block templates after chain reorganizations.
Bitcoin Core released the fix in v30.0 and backported it to 28.x and 29.x.

Bitcoin Core disclosed high-risk vulnerability CVE-2025-62861 on Nov. 10, 2026, affecting versions 28.0 through 28.2 and 29.0 through 29.1. The flaw affects TRUC sibling-transaction eviction during a blockchain reorganization, potentially leaving transaction pools inconsistent and preventing affected nodes from creating block templates until they restart. Bitcoin Core released a fix in v30.0 on Oct. 10, 2025, and backported it to the 28.x and 29.x branches. Niklas Goegge discovered the vulnerability and disclosed it responsibly, while Greg Sanders submitted pull request #33504 to address it.