How severe is CVE-2026-31802?

CVE-2026-31802 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-31802 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-31802?

CVE-2026-31802 affects Isaacs Tar. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-31802?

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

Does CVE-2026-31802 have an EU (EUVD) identifier?

Yes. CVE-2026-31802 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10403.

When was CVE-2026-31802 published?

CVE-2026-31802 was published on 2026-03-10 and last updated on 2026-06-17.

CVE-2026-31802

CVE-2026-31802 is a medium-severity vulnerability in Isaacs Tar with a CVSS 3.x base score of 5.5. 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 5.5)
CVSS v4: 8.2
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10403
Weakness: CWE-22
Affected product: Isaacs Tar
Published: 2026-03-10
Last modified: 2026-06-17

Description

node-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extraction directory by using a drive-relative symlink target such as C:../../../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This vulnerability is fixed in 7.5.11.

Frequently asked questions

What is CVE-2026-31802?: node-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extraction directory by using a drive-relative symlink target such as C:../../../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This vulnerability is fixed in 7.5.11.
How severe is CVE-2026-31802?: CVE-2026-31802 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-31802 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-31802?: CVE-2026-31802 affects Isaacs Tar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-31802?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-31802 have an EU (EUVD) identifier?: Yes. CVE-2026-31802 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10403.
When was CVE-2026-31802 published?: CVE-2026-31802 was published on 2026-03-10 and last updated on 2026-06-17.

References

Affected products (1)

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

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