CVE-2026-29786

MEDIUMNVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.3 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 63% of all CVEs by exploit prediction. 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, nvd
Elevated
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 6.3Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

node-tar is a full-featured Tar for Node.js. Prior to version 7.5.10, tar can be tricked into creating a hardlink that points outside the extraction directory by using a drive-relative link target such as C:../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This issue has been patched in version 7.5.10.

CVSS v3
6.3
EG Score
6.3MEDIUMmedium confidence
EG Risk
44
EG Risk 44/100

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
Severity63% × 45%
Exploitation40% × 40%
Automatability0% × 15%
EPSS PROB
0.4%
EPSS %ILE
32nd
KEV
Not listed

Published

March 7, 2026

Last Modified

September 1, 2026

Advisory Details (2)

Auto-updated Jul 15, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
github_commit

commit 7bc755dd85e6 (isaacs/node-tar)

Fix landed in isaacs/node-tar commit 7bc755dd85e6 — awaiting tagged release

https://github.com/isaacs/node-tar/commit/7bc755dd85e623c0279e08eb3784909e6d7e4b9f
githubMentions a patch (unverified)🟡 PoC Available

Hardlink Path Traversal via Drive-Relative Linkpath · Advisory · isaacs/node-tar · GitHub

https://github.com/isaacs/node-tar/security/advisories/GHSA-qffp-2rhf-9h96

Vendor Advisories for CVE-2026-29786(1)

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

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
node-tar6.0.5+ds1+~cs11.3.9-1, 6.0.5+ds1+~cs11.3.9-1+deb11u1, 6.0.5+ds1+~cs11.3.9-1+deb11u2
  • every version up to 6.0.5+ds1+~cs11.3.9-1+deb11u3: fixed in 6.0.5+ds1+~cs11.3.9-1+deb11u3
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
node-tar6.1.13+~cs7.0.5-1
  • every version up to 6.1.13+~cs7.0.5-1+deb12u1: fixed in 6.1.13+~cs7.0.5-1+deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
node-tar6.2.1+~cs7.0.8-1
  • every version up to 6.2.1+~cs7.0.8-1+deb13u1: fixed in 6.2.1+~cs7.0.8-1+deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
node-tar6.2.1+ds1+~cs6.1.13-1 ... 6.2.1+~cs7.0.8-1 (8 versions)
  • every version up to 6.2.1+ds1+~cs6.1.13-8: fixed in 6.2.1+ds1+~cs6.1.13-8
—
npm(1)
PackageVulnerable rangeFix by version rangeDependents
tar—
  • every version up to 7.5.10: fixed in 7.5.10
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 25× 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 122 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-29786?
CVE-2026-29786 is a medium vulnerability published on March 7, 2026. node-tar is a full-featured Tar for Node.js. Prior to version 7.5.10, tar can be tricked into creating a hardlink that points outside the extraction directory by using a drive-relative link target such as C:../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction.…
When was CVE-2026-29786 disclosed?
CVE-2026-29786 was first published on March 7, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-29786 actively exploited?
CVE-2026-29786 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (32nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-29786?
CVE-2026-29786 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-29786?
A fix for CVE-2026-29786 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-29786 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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