CVE-2013-4165: Bitcoin Core

Medium severity, CVSS 4.3. EPSS: 2.3% chance of exploitation in the next 30 days.

The HTTPAuthorized function in bitcoinrpc.cpp in bitcoind 0.8.1 provides information about authentication failure upon detecting the first incorrect byte of a password, which makes it easier for remote attackers to determine passwords via a timing side-channel attack.

Affected products

• Bitcoin Bitcoin Core: version 0.8.1 only

Published 2013-08-02. Last modified 2026-06-16.