CVE-2020-12690

Name: CVE-2020-12690
Creator: NVD / NIST
Published: 2020-05-07T00:15:10.923+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.90%

Last modified Jun 17, 2026

CVE-2020-12690 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 1.90% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.90%

77.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-613

Affected Software

Vendor	Product	Versions
Openstack	Keystone	< 15.0.1
Openstack	Keystone	16.0.0

References

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

Timeline

Published: May 7, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-12690?

How severe is CVE-2020-12690?

CVE-2020-12690 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.90% probability of exploitation in the next 30 days.

How do I fix CVE-2020-12690?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-12690?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST