CVE-2012-5563

OpenStack Keystone, as used in OpenStack Folsom 2012.2, does not properly implement token expiration, which allows remote authenticated users to bypass intended authorization restrictions by creating new tokens through token chaining. NOTE: this issue exists because of a CVE-2012-3426 regression.

Published: 2012-12-17 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-5563 is rated Moderate Risk (48.1/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.84%). EPSS rose +2.45% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2012-5563

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.39% 2.84% +2.45%
2 2026-02-14 0.47% 0.39% -0.07%
3 2025-12-14 — 0.47% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-5563

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2012-5563

GitHub Security Advisory for CVE-2012-5563

GHSA-w66p-78g4-mr7g · Severity: high · Ecosystem: pip — OpenStack Keystone Insufficient token expiration

OS Trackers for CVE-2012-5563

vendor priority summary link
debian unimportant CVE-2012-5563 unimportant priority: Debian including 1 source packages (keystone), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2012-5563
redhat medium — https://access.redhat.com/security/cve/CVE-2012-5563
ubuntu low CVE-2012-5563 low priority: Ubuntu including 1 source packages (keystone), 6 status rows across 6 suites (hardy, lucid, oneiric, precise, quantal, upstream): DNE 2, not-affected 2, pending 1, released 1. https://ubuntu.com/security/CVE-2012-5563

Affected software / configurations for CVE-2012-5563

Vendor Product Version Raw CPE
openstack folsom 2012.2 cpe:2.3:a:openstack:folsom:2012.2:*:*:*:*:*:*:*

References for CVE-2012-5563

cvelogic Threat Intelligence