Bitcoin Core Discloses Bugs That Could Freeze Mining Nodes
By Unchained
AI summary of the source article
Bitcoin Core has disclosed three security vulnerabilities patched over a year earlier in versions 30.0 and 29.2. The flaws include a high-severity issue that could prevent affected mining nodes from producing blocks until restarted.
Why it matters
Per the advisory, the high-severity vulnerability causes a miner's block template to fail validation, so the node "cannot produce blocks until it is restarted."
Key facts
- Bitcoin Core disclosed three security bugs on Nov. 10: high-severity CVE-2025-62861 and medium-severity CVE-2025-62860 and CVE-2025-62859.
- All three vulnerabilities were fixed in Bitcoin Core version 30.0 on Oct. 10, 2025, and in version 29.2 four days later.
- The high-severity bug caused block templates to fail validation during chain reorganizations, leaving affected mining nodes unable to produce blocks until restarted.
Source excerpt · Unchained
The fixes shipped in October 2025, and the project held back the details until its last vulnerable release line, 29.x, reached end of life on Oct. 27. The post Bitcoin Core Discloses Bugs That Could Freeze Mining Nodes appeared first on Unchained .