HIGH7.5

PYSEC-2026-1490

OpenStack Keystone allows /v3/ec2tokens or /v3/s3tokens request with valid AWS Signature to provide Keystone authorization.

Quick fix

PYSEC-2026-1490 — keystone: upgrade to the fixed version with the command below.

pip install --upgrade 'keystone>=26.0.1'

Details

OpenStack Keystone before 26.0.1, 27.0.0, and 28.0.0 allows a /v3/ec2tokens or /v3/s3tokens request with a valid AWS Signature to provide Keystone authorization.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/keystone

Introduced in: 0Fixed in: 26.0.1

Fixpip install --upgrade 'keystone>=26.0.1'

References

https://nvd.nist.gov/vuln/detail/CVE-2025-65073[ADVISORY]
https://github.com/openstack/keystone[PACKAGE]
https://www.openwall.com/lists/oss-security/2025/11/04/2[WEB]
http://www.openwall.com/lists/oss-security/2025/11/17/6[WEB]
https://pypi.org/project/keystone[PACKAGE]
https://github.com/advisories/GHSA-hcqg-5g63-7j9h[ADVISORY]