How severe is CVE-2021-31918?

CVE-2021-31918 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-31918 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-31918?

CVE-2021-31918 affects Redhat Openstack. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-31918?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-31918 published?

CVE-2021-31918 was published on 2021-05-06 and last updated on 2026-06-17.

CVE-2021-31918

CVE-2021-31918 is a high-severity vulnerability in Redhat Openstack with a CVSS 3.x base score of 7.5. 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-732.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-732
Affected product: Redhat Openstack
Published: 2021-05-06
Last modified: 2026-06-17

Description

A flaw was found in tripleo-ansible version as shipped in Red Hat Openstack 16.1. The Ansible log file is readable to all users during stack update and creation. The highest threat from this vulnerability is to data confidentiality.

Frequently asked questions

What is CVE-2021-31918?: A flaw was found in tripleo-ansible version as shipped in Red Hat Openstack 16.1. The Ansible log file is readable to all users during stack update and creation. The highest threat from this vulnerability is to data confidentiality.
How severe is CVE-2021-31918?: CVE-2021-31918 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-31918 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-31918?: CVE-2021-31918 affects Redhat Openstack. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-31918?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-31918 published?: CVE-2021-31918 was published on 2021-05-06 and last updated on 2026-06-17.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1954250

Affected products (1)

cpe:2.3:a:redhat:openstack:16.1:*:*:*:*:*:*:*

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