How severe is CVE-2021-38197?

CVE-2021-38197 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-38197 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38197?

CVE-2021-38197 affects Go-unarr Project Go-unarr. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-38197?

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

When was CVE-2021-38197 published?

CVE-2021-38197 was published on 2021-08-08 and last updated on 2026-06-17.

CVE-2021-38197

CVE-2021-38197 is a critical-severity vulnerability in Go-unarr Project Go-unarr with a CVSS 3.x base score of 9.8. 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-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Go-unarr Project Go-unarr
Published: 2021-08-08
Last modified: 2026-06-17

Description

unarr.go in go-unarr (aka Go bindings for unarr) 0.1.1 allows Directory Traversal via ../ in a pathname within a TAR archive.

Frequently asked questions

What is CVE-2021-38197?: unarr.go in go-unarr (aka Go bindings for unarr) 0.1.1 allows Directory Traversal via ../ in a pathname within a TAR archive.
How severe is CVE-2021-38197?: CVE-2021-38197 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-38197 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38197?: CVE-2021-38197 affects Go-unarr Project Go-unarr. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-38197?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-38197 published?: CVE-2021-38197 was published on 2021-08-08 and last updated on 2026-06-17.

References

https://github.com/gen2brain/go-unarr/issues/21

Affected products (1)

cpe:2.3:a:go-unarr_project:go-unarr:0.1.1:*:*:*:*:*:*:*

Other CWE-22 (Path Traversal) vulnerabilities

CVE-2026-48282 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Limitation of a Pathname to a Restricted…
CVE-2026-54917 — Critical (CVSS 10.0): SeaweedFS is a distributed storage system for object storage (S3), file systems, and Iceberg tables. Prior to 4.30, the…
CVE-2026-11429 — Critical (CVSS 10.0): Two endpoints in the Vault Service ScriptsController, shared by Altium Enterprise Server and Altium 365, accept file…
CVE-2026-34909 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to…
CVE-2026-7411 — Critical (CVSS 10.0): In Eclipse BaSyx Java Server SDK versions prior to 2.0.0-milestone-10, inadequate path normalization in the Submodel…
CVE-2026-36767 — Critical (CVSS 10.0): A path traversal vulnerability in the /content/images/add endpoint of shopizer v3.2.5 allows attackers write arbitrary…

Browse all CWE-22 (Path Traversal) vulnerabilities →