CVE-2026-73566

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (42nd percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 7.5Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
65
EG Risk 65/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
43rd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 13, 2026

Last Modified

September 16, 2026

Advisory Details (2)

Auto-updated Aug 13, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
github_commit

commit 631ae59121bf (isaacs/node-tar)

Fix landed in isaacs/node-tar commit 631ae59121bf — awaiting tagged release

https://github.com/isaacs/node-tar/commit/631ae59121bf8fc8a22bbae35f074cb9b789cd4a
githubMentions a patch (unverified)🟡 PoC Available

Uncontrolled recursion in mapHas/filesFilter allows uncatchable stack-overflow DoS via crafted long-path tar with member selection · Advisory · isaacs/node-tar · GitHub

https://github.com/isaacs/node-tar/security/advisories/GHSA-r292-9mhp-454m

Vendor Advisories for CVE-2026-73566(12)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(10)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrhmtc/openshift-migration-ui-rhel8:17895463732026-09-17redhat
redhatdevspaces/pluginregistry-rhel9:17888831792026-09-17redhat
redhatansible-automation-platform/bootc-automation-portal-rhel9:17889435312026-09-09redhat
redhatansible-automation-platform/automation-portal:17887757482026-09-08redhat
redhatopenshift4/ose-agent-installer-ui-rhel9:17883515782026-09-08redhat
redhatansible-automation-platform/automation-portal:17887835912026-09-08redhat
redhatrhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9:17878015272026-09-08redhat
redhatopenshift4/ose-agent-installer-ui-rhel9:17877353342026-09-01redhat
redhatopenshift4/ose-agent-installer-ui-rhel9:17877445942026-09-01redhat
redhatdevspaces/code-rhel9:17877627932026-09-01redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
node-tar6.1.13+~cs7.0.5-1 ... 7.5.22+~4.0.1-1 (22 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
node-tar6.2.1+ds1+~cs6.1.13-1 ... 7.5.22+~4.0.1-1 (18 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
node-tar6.2.1+ds1+~cs6.1.13-1 ... 7.5.19+~4.0.1-2 (16 versions)
  • every version up to 7.5.22+~4.0.1-1: fixed in 7.5.22+~4.0.1-1
—
npm(1)
PackageVulnerable rangeFix by version rangeDependents
tar—
  • every version up to 7.5.21: fixed in 7.5.21
—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 17× in last 7d / 91× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 163 total refreshes for this CVE.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:13 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
  4. 2026-10-07 01:20 UTCEG score recompute
  5. 2026-10-07 01:20 UTCVendor advisory
  6. 2026-10-06 15:18 UTCEPSS rescore
  7. 2026-10-06 13:20 UTCEG score recompute
  8. 2026-10-06 13:20 UTCVendor advisory
  9. 2026-10-05 17:43 UTCEPSS rescore
  10. 2026-10-05 14:37 UTCEG score recompute
  11. 2026-10-05 14:37 UTCVendor advisory
  12. 2026-10-04 23:22 UTCEPSS rescore
  13. 2026-10-04 22:18 UTCVendor advisory
  14. 2026-10-04 07:29 UTCVendor advisory
  15. 2026-10-03 19:47 UTCEG score recompute
  16. 2026-10-03 19:47 UTCVendor advisory
  17. 2026-10-03 14:26 UTCEPSS rescore
  18. 2026-10-02 19:22 UTCEG score recompute
  19. 2026-10-02 19:22 UTCVendor advisory
  20. 2026-10-02 07:32 UTCEG score recompute
  21. 2026-10-02 07:32 UTCVendor advisory
  22. 2026-10-01 19:50 UTCEPSS rescore
  23. 2026-10-01 09:28 UTCVendor advisory
  24. 2026-09-30 21:46 UTCEG score recompute
  25. 2026-09-30 21:46 UTCVendor advisory
Show 75 more
  1. 2026-09-29 15:24 UTCEPSS rescore
  2. 2026-09-29 03:52 UTCEG score recompute
  3. 2026-09-29 03:52 UTCVendor advisory
  4. 2026-09-28 13:52 UTCEPSS rescore
  5. 2026-09-28 12:26 UTCVendor advisory
  6. 2026-09-28 00:45 UTCEG score recompute
  7. 2026-09-28 00:45 UTCVendor advisory
  8. 2026-09-27 13:48 UTCEPSS rescore
  9. 2026-09-27 09:43 UTCEG score recompute
  10. 2026-09-27 09:43 UTCVendor advisory
  11. 2026-09-26 15:59 UTCEPSS rescore
  12. 2026-09-25 03:32 UTCEG score recompute
  13. 2026-09-25 03:32 UTCVendor advisory
  14. 2026-09-24 11:12 UTCVendor advisory
  15. 2026-09-23 23:32 UTCEG score recompute
  16. 2026-09-23 23:32 UTCVendor advisory
  17. 2026-09-23 17:54 UTCEPSS rescore
  18. 2026-09-23 11:29 UTCVendor advisory
  19. 2026-09-22 23:49 UTCEG score recompute
  20. 2026-09-22 23:49 UTCVendor advisory
  21. 2026-09-22 11:42 UTCVendor advisory
  22. 2026-09-22 00:01 UTCEG score recompute
  23. 2026-09-22 00:01 UTCVendor advisory
  24. 2026-09-21 21:09 UTCEPSS rescore
  25. 2026-09-21 12:15 UTCVendor advisory
  26. 2026-09-21 00:29 UTCEG score recompute
  27. 2026-09-21 00:29 UTCVendor advisory
  28. 2026-09-20 20:16 UTCEPSS rescore
  29. 2026-09-20 12:44 UTCVendor advisory
  30. 2026-09-19 23:54 UTCEG score recompute
  31. 2026-09-19 23:54 UTCVendor advisory
  32. 2026-09-19 12:13 UTCVendor advisory
  33. 2026-09-19 00:32 UTCEG score recompute
  34. 2026-09-19 00:32 UTCVendor advisory
  35. 2026-09-18 19:28 UTCEPSS rescore
  36. 2026-09-18 12:49 UTCVendor advisory
  37. 2026-09-18 00:58 UTCEG score recompute
  38. 2026-09-18 00:58 UTCVendor advisory
  39. 2026-09-17 13:18 UTCVendor advisory
  40. 2026-09-17 01:27 UTCEG score recompute
  41. 2026-09-17 01:27 UTCVendor advisory
  42. 2026-09-16 14:08 UTCEPSS rescore
  43. 2026-09-16 13:46 UTCEG score recompute
  44. 2026-09-16 13:46 UTCVendor advisory
  45. 2026-09-16 05:15 UTCEPSS rescore
  46. 2026-09-16 01:37 UTCVendor advisory
  47. 2026-09-15 13:57 UTCEG score recompute
  48. 2026-09-15 13:57 UTCVendor advisory
  49. 2026-09-15 03:12 UTCEPSS rescore
  50. 2026-09-15 02:15 UTCVendor advisory
  51. 2026-09-14 14:29 UTCVendor advisory
  52. 2026-09-14 02:49 UTCEG score recompute
  53. 2026-09-14 02:49 UTCVendor advisory
  54. 2026-09-13 15:09 UTCVendor advisory
  55. 2026-09-13 03:27 UTCVendor advisory
  56. 2026-09-12 15:47 UTCEG score recompute
  57. 2026-09-12 15:47 UTCVendor advisory
  58. 2026-09-12 15:02 UTCEPSS rescore
  59. 2026-09-12 04:07 UTCVendor advisory
  60. 2026-09-11 16:26 UTCEG score recompute
  61. 2026-09-11 16:26 UTCVendor advisory
  62. 2026-09-11 14:53 UTCEPSS rescore
  63. 2026-09-11 04:45 UTCVendor advisory
  64. 2026-09-10 17:04 UTCEG score recompute
  65. 2026-09-10 17:04 UTCVendor advisory
  66. 2026-09-10 09:35 UTCEPSS rescore
  67. 2026-09-10 05:24 UTCVendor advisory
  68. 2026-09-09 17:43 UTCVendor advisory
  69. 2026-09-09 04:56 UTCEG score recompute
  70. 2026-09-09 04:56 UTCVendor advisory
  71. 2026-09-08 22:01 UTCEPSS rescore
  72. 2026-09-08 04:12 UTCVendor advisory
  73. 2026-09-07 16:31 UTCEG score recompute
  74. 2026-09-07 16:31 UTCVendor advisory
  75. 2026-09-06 23:59 UTCEG score recompute

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-73566?
CVE-2026-73566 is a high vulnerability published on August 13, 2026. 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…
When was CVE-2026-73566 disclosed?
CVE-2026-73566 was first published on August 13, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73566 actively exploited?
CVE-2026-73566 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (43rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-73566?
CVE-2026-73566 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-73566?
A fix for CVE-2026-73566 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-73566 are linked in the Vendor Advisories panel on this page.

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