How severe is CVE-2020-12692?

CVE-2020-12692 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-12692 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-12692?

CVE-2020-12692 primarily affects Openstack Keystone. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-12692?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-12692 published?

CVE-2020-12692 was published on 2020-05-07 and last updated on 2026-06-17.

CVE-2020-12692

CVE-2020-12692 is a medium-severity vulnerability in Openstack Keystone with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-294.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 5.5
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-294
Affected product: Openstack Keystone
Published: 2020-05-07
Last modified: 2026-06-17

Description

An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. The EC2 API doesn't have a signature TTL check for AWS Signature V4. An attacker can sniff the Authorization header, and then use it to reissue an OpenStack token an unlimited number of times.

Frequently asked questions

What is CVE-2020-12692?: An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. The EC2 API doesn't have a signature TTL check for AWS Signature V4. An attacker can sniff the Authorization header, and then use it to reissue an OpenStack token an unlimited number of times.
How severe is CVE-2020-12692?: CVE-2020-12692 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-12692 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-12692?: CVE-2020-12692 primarily affects Openstack Keystone. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-12692?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-12692 published?: CVE-2020-12692 was published on 2020-05-07 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:*
cpe:2.3:a:openstack:keystone:16.0.0:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

More vulnerabilities in Openstack Keystone

CVE-2020-12691 — High (CVSS 8.8): An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. Any authenticated user can create an EC2…
CVE-2020-12690 — High (CVSS 8.8): An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. The list of roles provided for an OAuth1…
CVE-2020-12689 — High (CVSS 8.8): An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. Any user authenticated within a limited scope…
CVE-2019-19687 — High (CVSS 8.8): OpenStack Keystone 15.0.0 and 16.0.0 is affected by Data Leakage in the list credentials API. Any user with a role on a…
CVE-2026-43001 — High (CVSS 7.9): An issue was discovered in OpenStack Keystone before 29.0.2. POST /v3/credentials did not validate that the…
CVE-2014-2828 — High (CVSS 7.8): The V3 API in OpenStack Identity (Keystone) 2013.1 before 2013.2.4 and icehouse before icehouse-rc2 allows remote…

All CVEs affecting Openstack Keystone →

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