CVE-2026-90460

HIGH

7.6

CVSS Score

Published: September 11, 2026 at 09:22 PM UTC

Updated: October 13, 2026 at 05:17 PM UTC

1 product affected across 1 vendorKeystone

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Severity

HIGH7.6

Exploit prediction

EPSS 0.6%

SSVC

PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Keystone · Openstack

90%

13.0.0 28.0.0 29.0.0

Affected range stops below 27.0.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 28.0.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 29.0.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

Issue Tracking

Source: cverecord

https://launchpad.net/bugs/2159643

Issue Tracking

Source: cverecord

https://launchpad.net/bugs/2158931

Source: cverecord

https://review.opendev.org/1002330

Source: af854a3a-2127-422b-91ae-364da2661108

https://lists.debian.org/debian-lts-announce/2026/10/msg00027.html

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.6HIGHmitre

Vector?

Quick Info

StatusAWAITING ANALYSIS

CWE

CWE-863

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