CVE-2026-23745

MEDIUMNVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.1 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 72% 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
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: Elevated riskExposed: 0

A fix is available — apply it.

node-tar is a Tar for Node.js. The node-tar library (<= 7.5.2) fails to sanitize the linkpath of Link (hardlink) and SymbolicLink entries when preservePaths is false (the default secure behavior). This allows malicious archives to bypass the extraction root restriction, leading to Arbitrary File Overwrite via hardlinks and Symlink Poisoning via absolute symlink targets. This vulnerability is fixed in 7.5.3.

CVSS v3
6.1
EG Score
6.1(medium)
EG Risk
43(Track)
EG Risk 43/100SSVC: Track

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
Severity61% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
32%
KEV
Not listed

Published

January 16, 2026

Last Modified

September 7, 2026

Advisory Details (2)

Auto-updated Jul 3, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
github_commit

commit 340eb285b6d9 (isaacs/node-tar)

Fix landed in isaacs/node-tar commit 340eb285b6d9 — awaiting tagged release

https://github.com/isaacs/node-tar/commit/340eb285b6d986e91969a1170d7fe9b0face405e
github Patch Available🟡 PoC Available

Insufficient Link Path Sanitization · Advisory · isaacs/node-tar · GitHub

https://github.com/isaacs/node-tar/security/advisories/GHSA-8qq5-rm4j-mr97

Vendor Advisories for CVE-2026-23745(9)

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

Patch Availability(9)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatrhmtc/openshift-migration-ui-rhel8:17836905322026-07-20redhat
redhatrhoai/odh-dashboard-rhel9:17791896272026-05-20redhat
redhatlinux-sgx-0:2.26-7.el102026-05-19redhat
redhatlinux-sgx-0:2.26-7.el92026-05-19redhat
redhatdevspaces/udi-rhel9:17744519542026-03-30redhat
redhatrhoai/odh-dashboard-rhel9:17720934242026-03-04redhat
redhatnetwork-observability/network-observability-console-plugin-rhel9:17712276502026-02-18redhat
redhatrhtas/rekor-search-ui-rhel9:17707390562026-02-18redhat
redhatrhtas/rekor-search-ui-rhel9:17701074522026-02-05redhat

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

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
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+deb11u26.0.5+ds1+~cs11.3.9-1+deb11u3—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
node-tar6.1.13+~cs7.0.5-16.1.13+~cs7.0.5-1+deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
node-tar6.2.1+~cs7.0.8-16.2.1+~cs7.0.8-1+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
node-tar6.2.1+ds1+~cs6.1.13-1 ... 6.2.1+~cs7.0.8-1 (6 versions)6.2.1+ds1+~cs6.1.13-6—
npm(1)
PackageVulnerable rangeFixed inDependents
tar—7.5.3—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 36× 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 187 total refreshes for this CVE.

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

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCJvr2022/CVE-2026-23745
    First seen Jan 17, 2026

    Proof of Concept for CVE-2026-23745: Arbitrary File Overwrite vulnerability in node-tar (versions < 7.5.3).

    Open source ↗

Frequently asked(5)

What is CVE-2026-23745?
CVE-2026-23745 is a medium vulnerability published on January 16, 2026. node-tar is a Tar for Node.js. The node-tar library (<= 7.5.2) fails to sanitize the linkpath of Link (hardlink) and SymbolicLink entries when preservePaths is false (the default secure behavior). This allows malicious archives to bypass the extraction root restriction, leading to Arbitrary File…
When was CVE-2026-23745 disclosed?
CVE-2026-23745 was first published in the National Vulnerability Database on January 16, 2026, with the most recent update on September 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-23745 actively exploited?
CVE-2026-23745 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 68.0% of all scored CVEs.
What is the CVSS score of CVE-2026-23745?
CVE-2026-23745 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-23745?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23745, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-23745

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