CVE-2021-31876

Bitcoin Core 0.12.0 through 0.21.1 does not properly implement the replacement policy specified in BIP125, which makes it easier for attackers to trigger a loss of funds, or a denial of service attack against downstream projects such as Lightning network nodes. An unconfirmed child transaction wi...

CVE-2020-12119

Ledger Live before 2.7.0 does not handle Bitcoin's Replace-By-Fee RBF. It increases the user's balance with the value of an unconfirmed transaction as soon as it is received before the transaction is confirmed and does not decrease the balance when it is canceled. As a result, users are exposed t...

PT-2025-43696

Name of the Vulnerable Software and Affected Versions Bitcoin Core versions prior to 30.0 Bitcoin Knots version 20251110 Description The software addresses a resource exhaustion issue when processing an unconfirmed transaction. A fix was released on October 10th, 2025, in Bitcoin Core version 30....

CVE-2024-52913

In Bitcoin Core before 0.21.0, an attacker could prevent a node from seeing a specific unconfirmed transaction, because transaction re-requests are mishandled...

Bitcoin Core 安全漏洞

Bitcoin Core is a Bitcoin open source client for verifying the validity of blockchain transactions. A security vulnerability exists in Bitcoin Core versions prior to 0.21.0. An attacker exploiting the vulnerability could prevent nodes from viewing specific unconfirmed transactions...

Bitcoin Core 安全漏洞

Bitcoin Core is a Bitcoin open source client for verifying the validity of blockchain transactions. A security vulnerability exists in versions of Bitcoin Core prior to 0.18.0, which stems from the fact that nodes may stall for several hours while processing isolated blocks of specially crafted...

PT-2021-4101 · Unknown +1 · Bitcoin Core +1

Name of the Vulnerable Software and Affected Versions: Bitcoin Core versions 0.12.0 through 0.21.1 Description: The issue is related to the incorrect replacement of a child transaction in the Bitcoin Core implementation, specifically in the PreChecks functionality. This can be exploited by a remo...