HIGH

CVE-2026-73566

CVSS v3

7.5

HIGH

EPSS Score

0.5 %

exploit probability, as of 2026-10-17

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

tarnpmall versions · fixed in 7.5.21

Vendor advisories

CVE-2026-73566 Red Hat Product Security35 products fixed · 57 known affected
tar: node-tar: Denial of Service via crafted long-path tar archive
exploit-intelligence-tech-preview/vulnerability-analysis-rhel9 as a component of Exploit Intelligence · workload-availability/node-healthcheck-must-gather-rhel9 as a component of Node HealthCheck Operator · workload-availability/node-healthcheck-operator-bundle as a component of Node HealthCheck Operator
RHSA-2026:68754 Red Hat Product Security12 products fixed
Red Hat Security Advisory: Red Hat OpenShift Dev Spaces 3.30.1 Release.
RHSA-2026:68681 Red Hat Product Security1 product fixed
Red Hat Security Advisory: Migration Toolkit for Containers (MTC) 1.8.17 update
RHSA-2026:66003 Red Hat Product Security1 product fixed
Red Hat Security Advisory: Ansible automation portal Red Hat Enterprise Linux Images
RHSA-2026:63046 Red Hat Product Security1 product fixed
Red Hat Security Advisory: OpenShift Container Platform 4.21.32 bug fix and security update
RHSA-2026:65155 Red Hat Product Security1 product fixed
Red Hat Security Advisory: Ansible plug-ins for Red Hat Developer Hub Product Release Update

5 more advisories

Full record on NVD

Description

node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.21, node-tar's filesFilter in src/list.ts uses the recursive mapHas helper to walk an archive entry path upward with path.dirname() and no segment cap when tar.t(...) or tar.x(...) receives a non-empty member-selection list. A crafted GNU L or PAX x long-path header with thousands of slash-separated segments reaches this.filter(entry.path, entry) in Parser[CONSUMEHEADER] in src/parse.ts before Unpack[CHECKPATH] applies maxDepth, causing an uncatchable RangeError stack overflow that terminates asynchronous and streaming Node.js consumers. This issue is fixed in version 7.5.21.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2026-08-13
Last Modified: 2026-08-13

Frequently asked questions

What is CVE-2026-73566?

Is CVE-2026-73566 actively exploited?

Active exploitation of CVE-2026-73566 has not been confirmed. Its EPSS score was 0.5% on 2026-10-17, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-73566?

CVE-2026-73566 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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