🛡️ CVE-2015-7546 — keystone

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-522 OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

OpenStack Identity Keystone and keystonemiddleware Insufficiently Protected Credentials

The identity service in OpenStack Identity (Keystone) before 2015.1.3 (Kilo) and 8.0.x before 8.0.2 (Liberty) and keystonemiddleware (formerly python-keystoneclient) before 1.5.4 (Kilo) and Liberty before 2.3.3 does not properly invalidate authorization tokens when using the PKI or PKIZ token providers, which allows remote authenticated users to bypass intended access restrictions and gain access to cloud resources by manipulating byte fields within a revoked token.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. A user must be tricked into taking some action. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2015-7546 is classified as CWE-522: Insufficiently Protected Credentials. Credentials are stored or transmitted with protection too weak for what they unlock.

Affected software

CVE-2015-7546 is recorded against 2 packages.

  • keystone (from 8.0 up to 8.1.0)
  • keystonemiddleware (from 1.6.0 up to 2.3.3)

Timeline and source

Published on 13 May 2022 and last revised on 13 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Web)
bugs.launchpad.net (Web)
github.com (Web)
security.openstack.org (Web)
web.archive.org (Web)
wiki.openstack.org (Web)
www.oracle.com (Web)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CWE CWE-522
Public Exploit ✅ No
Source OSV
Published 2022-05-13
Updated 2026-08-12
Modified 2026-07-13
Fix URL N/A

Affected Packages

Software From version Fixed in
keystone 8.0 8.1.0
keystonemiddleware 1.6.0 2.3.3

Similar Threats

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