How severe is CVE-2025-59343?

CVE-2025-59343 has a CVSS 4.0 base score of 8.7, rated high severity.

Is CVE-2025-59343 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-59343?

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.

Does CVE-2025-59343 have an EU (EUVD) identifier?

Yes. CVE-2025-59343 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31022.

When was CVE-2025-59343 published?

CVE-2025-59343 was published on 2025-09-24 and last updated on 2026-06-17.

CVE-2025-59343

CVE-2025-59343 is a high-severity vulnerability with a CVSS 4.0 base score of 8.7. 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: High (CVSS 4.0 base score 8.7)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-31022
Weakness: CWE-22
Published: 2025-09-24
Last modified: 2026-06-17

Description

tar-fs provides filesystem bindings for tar-stream. Versions prior to 3.1.1, 2.1.3, and 1.16.5 are vulnerable to symlink validation bypass if the destination directory is predictable with a specific tarball. This issue has been patched in version 3.1.1, 2.1.4, and 1.16.6. A workaround involves using the ignore option on non files/directories.

Frequently asked questions

What is CVE-2025-59343?: tar-fs provides filesystem bindings for tar-stream. Versions prior to 3.1.1, 2.1.3, and 1.16.5 are vulnerable to symlink validation bypass if the destination directory is predictable with a specific tarball. This issue has been patched in version 3.1.1, 2.1.4, and 1.16.6. A workaround involves using the ignore option on non files/directories.
How severe is CVE-2025-59343?: CVE-2025-59343 has a CVSS 4.0 base score of 8.7, rated high severity.
Is CVE-2025-59343 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-59343?: 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.
Does CVE-2025-59343 have an EU (EUVD) identifier?: Yes. CVE-2025-59343 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31022.
When was CVE-2025-59343 published?: CVE-2025-59343 was published on 2025-09-24 and last updated on 2026-06-17.

References

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