# CVE-2026-73566: node-tar: Uncontrolled recursion in mapHas/filesFilter allows uncatchable stack-overflow DoS via crafted long-path tar with member selection

CVE-2026-73566 is fixed in 21 products on 1 platform, first by DEBIAN-CVE-2026-73566, released August 14, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-73566
- Priority: High
- CVSS: 7.5 (Important)
- EPSS: 0.0053
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 13, 2026
- Weakness: Uncontrolled Resource Consumption
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-73566

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | node-tar Debian 14 | 7.5.22+~4.0.1-1 | [DEBIAN-CVE-2026-73566](https://patchblox.com/security/data/fix/linux/debian-cve-2026-73566.md) | Aug 14, 2026 |
| Linux | nodejs22 amzn 2023 | 1:22.23.3-1.amzn2023.0.1 | [ALAS2023-2026-3277](https://patchblox.com/security/data/fix/linux/alas2023-2026-3277.md) | Nov 7, 2026 |
| Linux | nodejs22-debuginfo amzn 2023 | 1:22.23.3-1.amzn2023.0.1 | [ALAS2023-2026-3277](https://patchblox.com/security/data/fix/linux/alas2023-2026-3277.md) | Nov 7, 2026 |
| Linux | nodejs22-debugsource amzn 2023 | 1:22.23.3-1.amzn2023.0.1 | [ALAS2023-2026-3277](https://patchblox.com/security/data/fix/linux/alas2023-2026-3277.md) | Nov 7, 2026 |
| Linux | nodejs22-devel amzn 2023 | 1:22.23.3-1.amzn2023.0.1 | [ALAS2023-2026-3277](https://patchblox.com/security/data/fix/linux/alas2023-2026-3277.md) | Nov 7, 2026 |
| Linux | nodejs22-docs amzn 2023 | 1:22.23.3-1.amzn2023.0.1 | [ALAS2023-2026-3277](https://patchblox.com/security/data/fix/linux/alas2023-2026-3277.md) | Nov 7, 2026 |
| Linux | nodejs22-full-i18n amzn 2023 | 1:22.23.3-1.amzn2023.0.1 | [ALAS2023-2026-3277](https://patchblox.com/security/data/fix/linux/alas2023-2026-3277.md) | Nov 7, 2026 |
| Linux | nodejs22-libs amzn 2023 | 1:22.23.3-1.amzn2023.0.1 | [ALAS2023-2026-3277](https://patchblox.com/security/data/fix/linux/alas2023-2026-3277.md) | Nov 7, 2026 |
| Linux | nodejs22-libs-debuginfo amzn 2023 | 1:22.23.3-1.amzn2023.0.1 | [ALAS2023-2026-3277](https://patchblox.com/security/data/fix/linux/alas2023-2026-3277.md) | Nov 7, 2026 |
| Linux | nodejs22-npm amzn 2023 | 1:10.9.9-1.22.23.3.1.amzn2023.0.1 | [ALAS2023-2026-3277](https://patchblox.com/security/data/fix/linux/alas2023-2026-3277.md) | Nov 7, 2026 |
| Linux | nodejs24 amzn 2023 | 1:24.22.0-1.amzn2023.0.1 | [ALAS2023-2026-3297](https://patchblox.com/security/data/fix/linux/alas2023-2026-3297.md) | Nov 7, 2026 |
| Linux | nodejs24-debuginfo amzn 2023 | 1:24.22.0-1.amzn2023.0.1 | [ALAS2023-2026-3297](https://patchblox.com/security/data/fix/linux/alas2023-2026-3297.md) | Nov 7, 2026 |
| Linux | nodejs24-debugsource amzn 2023 | 1:24.22.0-1.amzn2023.0.1 | [ALAS2023-2026-3297](https://patchblox.com/security/data/fix/linux/alas2023-2026-3297.md) | Nov 7, 2026 |
| Linux | nodejs24-devel amzn 2023 | 1:24.22.0-1.amzn2023.0.1 | [ALAS2023-2026-3297](https://patchblox.com/security/data/fix/linux/alas2023-2026-3297.md) | Nov 7, 2026 |
| Linux | nodejs24-docs amzn 2023 | 1:24.22.0-1.amzn2023.0.1 | [ALAS2023-2026-3297](https://patchblox.com/security/data/fix/linux/alas2023-2026-3297.md) | Nov 7, 2026 |
| Linux | nodejs24-full-i18n amzn 2023 | 1:24.22.0-1.amzn2023.0.1 | [ALAS2023-2026-3297](https://patchblox.com/security/data/fix/linux/alas2023-2026-3297.md) | Nov 7, 2026 |
| Linux | nodejs24-libs amzn 2023 | 1:24.22.0-1.amzn2023.0.1 | [ALAS2023-2026-3297](https://patchblox.com/security/data/fix/linux/alas2023-2026-3297.md) | Nov 7, 2026 |
| Linux | nodejs24-libs-debuginfo amzn 2023 | 1:24.22.0-1.amzn2023.0.1 | [ALAS2023-2026-3297](https://patchblox.com/security/data/fix/linux/alas2023-2026-3297.md) | Nov 7, 2026 |
| Linux | nodejs24-npm amzn 2023 | 1:11.19.1-1.24.22.0.1.amzn2023.0.1 | [ALAS2023-2026-3297](https://patchblox.com/security/data/fix/linux/alas2023-2026-3297.md) | Nov 7, 2026 |
| Linux | v8-12.4-devel amzn 2023 | 3:12.4.254.21-1.22.23.3.1.amzn2023.0.1 | [ALAS2023-2026-3277](https://patchblox.com/security/data/fix/linux/alas2023-2026-3277.md) | Nov 7, 2026 |
| Linux | v8-13.6-devel amzn 2023 | 3:13.6.233.17-1.24.22.0.1.amzn2023.0.1 | [ALAS2023-2026-3297](https://patchblox.com/security/data/fix/linux/alas2023-2026-3297.md) | Nov 7, 2026 |

---

Data as of 2026-11-09T13:31:49Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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