CVE-2026-64863

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 71% 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, secondary
Elevated
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.1Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

goshs is a feature-rich single-binary file server for red teamers and developers. Prior to 2.1.4, the httpserver/server.go wdGuard handled WebDAV MOVE as a write-only method and did not enforce --no-delete, allowing WebDAV clients to delete or overwrite files via MOVE with Overwrite: T. This issue is fixed in version 2.1.4.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
72(Attend)
EG Risk 72/100SSVC: Attend

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
Severity91% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
29%
KEV
Not listed

Published

July 28, 2026

Last Modified

July 30, 2026

Advisory Details (3)

Auto-updated Sep 16, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release, github.
github Patch Available🟡 PoC Available

goshs --no-delete WebDAV MOVE bypass allows file deletion/overwrite · Advisory · goshs-labs/goshs · GitHub

https://github.com/goshs-labs/goshs/security/advisories/GHSA-hq33-8jgp-8qq3
github_release Patch Available

v2.1.4

Patch available: goshs-labs/goshs v2.1.4

https://github.com/goshs-labs/goshs/releases/tag/v2.1.4
github_commit

commit 0444ac6b1a81 (goshs-labs/goshs)

Fix landed in goshs-labs/goshs commit 0444ac6b1a81 — awaiting tagged release

https://github.com/goshs-labs/goshs/commit/0444ac6b1a8176ddae70d940adf7a26b2e5a6c29

Vendor Advisories for CVE-2026-64863(1)

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

Affected Packages

(4 across 1 ecosystem)
Go(4)
PackageVulnerable rangeFixed inDependents
github.com/patrickhener/goshs———
github.com/patrickhener/goshs/v2—2.1.4—
goshs.de/goshs———
goshs.de/goshs/v2—2.1.4—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 47× 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.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-64863?
CVE-2026-64863 is a critical vulnerability published on July 28, 2026. goshs is a feature-rich single-binary file server for red teamers and developers. Prior to 2.1.4, the httpserver/server.go wdGuard handled WebDAV MOVE as a write-only method and did not enforce --no-delete, allowing WebDAV clients to delete or overwrite files via MOVE with Overwrite: T. This issue…
When was CVE-2026-64863 disclosed?
CVE-2026-64863 was first published in the National Vulnerability Database on July 28, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64863 actively exploited?
CVE-2026-64863 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 71.1% of all scored CVEs.
What is the CVSS score of CVE-2026-64863?
CVE-2026-64863 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-64863?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64863, 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

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