CVE-2016-4911

· MEDIUMModified

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CVSS v3.1

4.3

EPSS

1.40%

Published

Jun 13, 2016

Modified

May 6, 2026

Public PoC / Exploit

All weaponized →

No public PoC or exploit code indexed for this CVE.

Links to public security research (Exploit-DB, Nuclei, Trickest, GitHub) for defensive use only.

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Weaknesses (CWE)

CWE-284

Affected Products (3)

keystone · openstack_identityvulnerable

References (12)

http://www.openwall.com/lists/oss-security/2016/05/17/10

Mailing List

http://www.openwall.com/lists/oss-security/2016/05/17/11

Mailing List

http://www.securityfocus.com/bid/90728

Third Party AdvisoryVDB Entry

https://bugs.launchpad.net/keystone/+bug/1577558

Vendor Advisory

https://review.openstack.org/#/c/311886/

Vendor Advisory

https://security.openstack.org/ossa/OSSA-2016-008.html

PatchVendor Advisory

http://www.openwall.com/lists/oss-security/2016/05/17/10

Mailing List

http://www.openwall.com/lists/oss-security/2016/05/17/11

Mailing List

http://www.securityfocus.com/bid/90728

Third Party AdvisoryVDB Entry

https://bugs.launchpad.net/keystone/+bug/1577558

Vendor Advisory

https://review.openstack.org/#/c/311886/

Vendor Advisory

https://security.openstack.org/ossa/OSSA-2016-008.html

PatchVendor Advisory

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