CVE-2026-24842

CVE-2026-24842 is a high-severity vulnerability in Isaacs Tar with a CVSS 3.x base score of 8.2. 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

Description

node-tar,a Tar for Node.js, contains a vulnerability in versions prior to 7.5.7 where the security check for hardlink entries uses different path resolution semantics than the actual hardlink creation logic. This mismatch allows an attacker to craft a malicious TAR archive that bypasses path traversal protections and creates hardlinks to arbitrary files outside the extraction directory. Version 7.5.7 contains a fix for the issue.

Frequently asked questions

What is CVE-2026-24842?
node-tar,a Tar for Node.js, contains a vulnerability in versions prior to 7.5.7 where the security check for hardlink entries uses different path resolution semantics than the actual hardlink creation logic. This mismatch allows an attacker to craft a malicious TAR archive that bypasses path traversal protections and creates hardlinks to arbitrary files outside the extraction directory. Version 7.5.7 contains a fix for the issue.
How severe is CVE-2026-24842?
CVE-2026-24842 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2026-24842 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-24842?
CVE-2026-24842 affects Isaacs Tar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-24842?
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-2026-24842 have an EU (EUVD) identifier?
Yes. CVE-2026-24842 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4909.
When was CVE-2026-24842 published?
CVE-2026-24842 was published on 2026-01-28 and last updated on 2026-06-30.

References

Affected products (1)

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