CVE-2023-50428: Bitcoin Core

Medium severity, CVSS 5.3. EPSS: 0.8% chance of exploitation in the next 30 days.

In Bitcoin Core through 26.0 and Bitcoin Knots before 25.1.knots20231115, datacarrier size limits can be bypassed by obfuscating data as code (e.g., with OP_FALSE OP_IF), as exploited in the wild by Inscriptions in 2022 and 2023. NOTE: although this is a vulnerability from the perspective of the Bitcoin Knots project, some others consider it "not a bug."

Affected products

• Bitcoin Bitcoin Core: from 0.9, up to and including 26.0
• Bitcoinknots Bitcoin Knots: from 0.9, before 25.1 (fixed in 25.1)

Published 2023-12-09. Last modified 2026-06-17.