CVE-2026-90460

State: Published
Severity: 7.6 High
Published: Sep 11, 2026
Updated: Oct 13, 2026
Reserved: Sep 11, 2026

Description

An issue was discovered in OpenStack Keystone before 29.0.3. Tokens obtained via delegated authentication methods (EC2 credentials, application credentials, OAuth1 access tokens, and trusts) are not blocked from creating, modifying, or deleting credentials via the /v3/credentials API. EC2-derived tokens can additionally read credential blobs, exposing TOTP MFA seeds and other secrets. Also, PATCH /v3/credentials does not validate the requested post-update project_id, allowing any delegated token to move a credential to an unauthorized project. All Keystone deployments using delegated authentication are affected.

Scores

CVSS	Score	Vector	Source
4.0	7.6 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N	mitre

Weaknesses

CWE-863 Incorrect Authorization

Affected Products

Product	Versions
KeystoneOpenStack	13.0.0 to before 27.0.3Affected 28.0.0 to before 28.0.3Affected 29.0.0 to before 29.0.3Affected

References

https://launchpad.net/bugs/2159643issue-tracking
https://launchpad.net/bugs/2158931issue-tracking
https://review.opendev.org/1002330
https://lists.debian.org/debian-lts-announce/2026/10/msg00027.html

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