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CVE-2026-44394

6.0 · MEDIUM

An issue was discovered in OpenStack Keystone before 29.0.2.

Published May 28, 2026CWE-863EPSS 0.32%

Overview

CVE-2026-44394 is a medium-severity vulnerability. It was published on May 28, 2026 and has a CVSS 3.1 base score of 6.0 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.0, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

An issue was discovered in OpenStack Keystone before 29.0.2. The Keystone federated token rescoping mechanism does not propagate the original token's expiry to the newly issued token. When a federated user rescopes a token via POST /v3/auth/tokens, the handle_scoped_token() function in the mapped authentication plugin returns response data without an expires_at value. The token provider falls back to issuing a token with a fresh default TTL. By rescoping repeatedly before each token expires, a user can maintain access indefinitely, bypassing operator-configured token lifetime policies. This is a variant of CVE-2012-3426. Only deployments using federated identity (SAML2, OpenID Connect) are affected.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refbugs.launchpad.net/keystone/+bug/2150379Refsecurity.openstack.org/ossa/OSSA-2026-015.html

How CyberStrike helps

Frequently asked questions

What is CVE-2026-44394?

CVE-2026-44394 is a medium-severity vulnerability. It was published on May 28, 2026 and has a CVSS 3.1 base score of 6.0 (MEDIUM).

How severe is CVE-2026-44394?

This vulnerability has a CVSS 3.1 base score of 6.0, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-44394?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-44394?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-44394 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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