GHSA-9h63-7qf6-mv6r · Severity: high · Ecosystem: go — Improper Authorization in github.com/containers/libpod
A flaw was found in podman before 1.7.0. File permissions for non-root users running in a privileged container are not correctly checked. This flaw can be abused by a low-privileged user inside the container to access any other file in the container, even if owned by the root user inside the container. It does not allow to directly escape the container, though being a privileged container means that a lot of security features are disabled when running the container. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Conclusion & alert: CVE-2021-20188 is rated Low Risk (36.9/100): CVSS High severity, with low exploitation likelihood (EPSS 0.08%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-11-21 | 0.03% | 0.08% | +0.06% |
| 2 | 2025-11-18 | 0.08% | 0.03% | -0.06% |
| 3 | 2025-03-30 | — | 0.08% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.0 | 3.1 | HIGH |
|
1.0 | 5.9 | [email protected] |
| 6.9 | 2.0 | MEDIUM |
|
3.4 | 10.0 | [email protected] |
GHSA-9h63-7qf6-mv6r · Severity: high · Ecosystem: go — Improper Authorization in github.com/containers/libpod
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2021-20188 not yet assigned priority: Debian including 1 source packages (libpod), 2 status rows across 2 suites (bookworm, bullseye): resolved 2. | https://security-tracker.debian.org/tracker/CVE-2021-20188 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2021-20188 |
suse
|
high | CVE-2021-20188 severity important: SUSE including 28 source package names (buildah-1.14.9-1.module+el8.2.1+6689+748e6520, buildah-tests-1.14.9-1.module+el8.2.1+6689+748e6520, …), 43 product×package rows across 12 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (12 product lines)): Fixed 26, Known Not Affected 17. | https://www.suse.com/security/cve/CVE-2021-20188/ |
ubuntu
|
medium | CVE-2021-20188 medium priority: Ubuntu including 1 source packages (libpod), 16 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): ignored 7, DNE 6, needs-triage 3. | https://ubuntu.com/security/CVE-2021-20188 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| podman_project | podman | < 1.7.0 | cpe:2.3:a:podman_project:podman:*:*:*:*:*:*:*:* |
| redhat | openshift_container_platform | 3.11 | cpe:2.3:a:redhat:openshift_container_platform:3.11:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 7.0 | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 8.0 | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1915734 | Issue Tracking Patch Vendor Advisory |