GHSA-vj76-c3g6-qr5v — tar-fs
Fix: mafintosh/tar-fs@0bd54cdGHSA-vj76-c3g6-qr5v is a Path Traversal vulnerability in tar-fs. A fix is available for tar-fs — see the affected versions and patch details below.
tar-fs has a symlink validation bypass if destination directory is predictable with a specific tarball
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for GHSA-vj76-c3g6-qr5v.
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.
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.
tar-fsnpmDescription
Impact
v3.1.0, v2.1.3, v1.16.5 and below
Patches
Has been patched in 3.1.1, 2.1.4, and 1.16.6
Workarounds
You can use the ignore option to ignore non files/directories.
ignore (_, header) {
// pass files & directories, ignore e.g. symlinks
return header.type !== 'file' && header.type !== 'directory'
}
Credit
Reported by: Mapta / BugBunny_ai
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | tar-fs | ≥ 3.0.0&&< 3.1.1 | 3.1.1npm install tar-fs@3.1.1 |
| 📦npm | tar-fs | ≥ 2.0.0&&< 2.1.4 | 2.1.4npm install tar-fs@2.1.4 |
| 📦npm | tar-fs | all versions | 1.16.6npm install tar-fs@1.16.6 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for tar-fs, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update tar-fs to 3.1.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-vj76-c3g6-qr5v 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-vj76-c3g6-qr5v can be triaged on real exposure rather than presence alone.
Tailored to GHSA-vj76-c3g6-qr5v. 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.
| Product | Fixed in | Advisory |
|---|---|---|
| Cryostat 4 on RHEL 9 | cryostat/cryostat-agent-init-rhel9:0.5.3-2 | RHSA-2025:17376 |
| Red Hat Ansible Automation Platform 2.5 for RHEL 8 | automation-gateway-0:2.5.20251022-1.el8ap | RHSA-2025:18979 |
| Red Hat Ansible Automation Platform 2.6 for RHEL 9 | automation-platform-ui-0:2.6.2-1.el9ap | RHSA-2025:19201 |
| Multicluster Global Hub 1.6.5 | multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1773650060 | RHSA-2026:6226 |
| Red Hat Ansible Automation Platform 2.6 | ansible-automation-platform-26/gateway-rhel9:2.6 | RHSA-2025:19221 |
| Red Hat Ceph Storage 7.1 | rhceph/rhceph-7-rhel9:1781863705 | RHSA-2026:33154 |
| Red Hat Ceph Storage 9.0 | rhceph/rhceph-9-rhel9:1781160401 | RHSA-2026:26411 |
| Red Hat Developer Hub 1.7 | rhdh/rhdh-hub-rhel9:1.7.2-1761774405 | RHSA-2025:19529 |
Frequently Asked Questions
Is GHSA-vj76-c3g6-qr5v in your dependencies?
O3 Security finds GHSA-vj76-c3g6-qr5v across npm dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.