How severe is CVE-2026-29786?

CVE-2026-29786 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-29786 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-29786?

CVE-2026-29786 affects Isaacs Tar. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-29786?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-29786 have an EU (EUVD) identifier?

Yes. CVE-2026-29786 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10164.

When was CVE-2026-29786 published?

CVE-2026-29786 was published on 2026-03-07 and last updated on 2026-09-01.

CVE-2026-29786

CVE-2026-29786 is a medium-severity vulnerability in Isaacs Tar with a CVSS 3.x base score of 6.3. 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: Medium (CVSS 3.x base score 6.3)
CVSS v4: 8.2
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10164
Weakness: CWE-22
Affected product: Isaacs Tar
Published: 2026-03-07
Last modified: 2026-09-01

Description

node-tar is a full-featured Tar for Node.js. Prior to version 7.5.10, tar can be tricked into creating a hardlink that points outside the extraction directory by using a drive-relative link target such as C:../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This issue has been patched in version 7.5.10.

Frequently asked questions

What is CVE-2026-29786?: node-tar is a full-featured Tar for Node.js. Prior to version 7.5.10, tar can be tricked into creating a hardlink that points outside the extraction directory by using a drive-relative link target such as C:../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This issue has been patched in version 7.5.10.
How severe is CVE-2026-29786?: CVE-2026-29786 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-29786 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-29786?: CVE-2026-29786 affects Isaacs Tar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-29786?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-29786 have an EU (EUVD) identifier?: Yes. CVE-2026-29786 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10164.
When was CVE-2026-29786 published?: CVE-2026-29786 was published on 2026-03-07 and last updated on 2026-09-01.

References

Affected products (1)

cpe:2.3:a:isaacs:tar:*:*:*:*:*:node.js:*:*

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