CVE-2016-4911: n/a vulnerability

CVE-2016-4911: The Fernet Token Provider in OpenStack Identity (Keystone) 9.0.x before 9.0.1 (mitaka) allows remote authen...

The Fernet Token Provider in OpenStack Identity (Keystone) 9.0.x before 9.0.1 (mitaka) allows remote authenticated users to prevent revocation of a chain of tokens and bypass intended access restrictions by rescoping a token.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 00:46 UTC (UTC+00:00)

Security readout for executives and security teams

This issue affects OpenStack Keystone Mitaka using Fernet tokens. An authenticated user could rescope a token in a way that prevents revocation of related tokens, potentially keeping access that should have been removed. Exposure is likely limited to organizations running OpenStack Keystone 9.0.x Mitaka before 9.0.1 with the Fernet token provider enabled. The bundle does not identify other affected versions or products. Treat as priority for any remaining Keystone Mitaka environment because it affects identity enforcement. If Keystone 9.0.x Fernet tokens are not present, business exposure appears low based on provided sources. Mitigation focus: Upgrade OpenStack Keystone Mitaka to 9.0.1 or a vendor-supported fixed build.; Check OpenStack OSSA-2016-008 and distribution advisories for applicable backports.; Review Keystone token provider configuration for Fernet token usage..

Prepared: Jun 13, 2026, 14:22 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

description · low confidence lookup

Credential and access behavior lookup

The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup

cve · low confidence lookup

CVE-2016-4911 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup

Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jun 13, 2016, 14:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://bugs.launchpad.net/keystone/+bug/1577558CVE reference · x_refsource_CONFIRM
https://security.openstack.org/ossa/OSSA-2016-008.htmlCVE reference · x_refsource_CONFIRM
https://review.openstack.org/#/c/311886/CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.