GHSA-fx8w-mjvm-hvpc is a high-severity (CVSS 8.8) Path Traversal vulnerability in github.com/containers/buildah. 2 public exploit references exist, so weaponization risk is real. A fix is available for github.com/containers/buildah — see the affected versions and patch details below.
Path Traversal in Buildah
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
GHSA-fx8w-mjvm-hvpc plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 377,166 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
github.com/containers/buildahReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.
Description
A path traversal flaw was found in Buildah in versions before 1.14.5. This flaw allows an attacker to trick a user into building a malicious container image hosted on an HTTP(s) server and then write files to the user's system anywhere that the user has permissions.
Specific Go Packages Affected
github.com/containers/buildah/imagebuildah
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/containers/buildah | all versions | 1.14.4go get github.com/containers/buildah@v1.14.4 |
Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/containers/buildah, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update github.com/containers/buildah to 1.14.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-fx8w-mjvm-hvpc is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-fx8w-mjvm-hvpc can be triaged on real exposure rather than presence alone.
Tailored to GHSA-fx8w-mjvm-hvpc. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
While OpenShift Container Platform does include the vulnerable buildah code, it doesn't make use of the vulnerable function. Podman is also included in OpenShift Container Platform, but it isn't used to perform a build, so it has been given a low impact rating. OpenShift Container Platform 3.11 now used podman from…
| Product | Fixed in | Advisory |
|---|---|---|
| Red Hat Enterprise Linux 7 Extras | buildah-0:1.11.6-11.el7_8 | RHSA-2020:2116 |
| Red Hat Enterprise Linux 7 Extras | podman-0:1.6.4-18.el7_8 | RHSA-2020:2117 |
| Red Hat Enterprise Linux 8 | container-tools:1.0-8020020200420104655.28c38760 | RHSA-2020:1926 |
| Red Hat Enterprise Linux 8 | container-tools:2.0-8020020200420175838.28c38760 | RHSA-2020:1931 |
| Red Hat Enterprise Linux 8 | container-tools:rhel8-8020020200420180128.28c38760 | RHSA-2020:1932 |
| Red Hat OpenShift Container Platform 4.1 | podman-0:1.0.2-4.dev.git96ccc2e.rhaos4.1.el8 | RHSA-2020:1449 |
| Red Hat OpenShift Container Platform 4.2 | podman-0:1.4.2-6.rhaos4.2.el8 | RHSA-2020:1401 |
| Red Hat OpenShift Container Platform 4.3 | podman-0:1.6.4-10.rhaos4.3.el8 | RHSA-2020:1396 |
Frequently Asked Questions
Is GHSA-fx8w-mjvm-hvpc in your dependencies?
O3 Security finds GHSA-fx8w-mjvm-hvpc across Go dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.