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Vulnerability record · CVE-2020-12690 · published 7 May 2020

CVE-2020-12690: Openstack keystone insufficient session expiration vulnerability

Openstack · Keystone

An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. The list of roles provided for an OAuth1 access token is silently ignored. Thus, when an access token is used to request a keystone token, the keystone token contains every role assignment the creator had for the project. This results in the provided keystone token having more role assignments than the creator intended, possibly giving unintended escalated access.

8.8 CVSS 3.1 High EPSS 1.9% · top 21.2% CWE-613 · Insufficient session expiration
8.8CVSS 3.1 base score, v2 6.5
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References
17 Jun 2026Last modified by NVD

Description

An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. The list of roles provided for an OAuth1 access token is silently ignored. Thus, when an access token is used to request a keystone token, the keystone token contains every role assignment the creator had for the project. This results in the provided keystone token having more role assignments than the creator intended, possibly giving unintended escalated access.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.openwall.com/lists/oss-security/2020/05/07/3 Mailing ListThird Party Advisory
https://bugs.launchpad.net/keystone/+bug/1873290 PatchThird Party Advisory
https://lists.apache.org/thread.html/re237267da268c690df5e1c6ea6a38a7fc11617725e8049490f58a6fa%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/re4ffc55cd2f1b55a26e07c83b3c22c3fe4bae6054d000a57fb48d8c2%40%3Ccommits.druid.apache
https://security.openstack.org/ossa/OSSA-2020-005.html Vendor Advisory
https://usn.ubuntu.com/4480-1/
https://www.openwall.com/lists/oss-security/2020/05/06/6 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2020/05/07/3 Mailing ListThird Party Advisory
https://bugs.launchpad.net/keystone/+bug/1873290 PatchThird Party Advisory
https://lists.apache.org/thread.html/re237267da268c690df5e1c6ea6a38a7fc11617725e8049490f58a6fa%40%3Ccommits.druid.apache
https://lists.apache.org/thread.html/re4ffc55cd2f1b55a26e07c83b3c22c3fe4bae6054d000a57fb48d8c2%40%3Ccommits.druid.apache
https://security.openstack.org/ossa/OSSA-2020-005.html Vendor Advisory
https://usn.ubuntu.com/4480-1/
https://www.openwall.com/lists/oss-security/2020/05/06/6 Mailing ListThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-12690), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.