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.
CVE-2026-64863
CRITICALPre-NVD 9.19.1—Elevated
EchelonGraph scoreMEDIUM confidence
This critical-severity CVE scores 9.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 74% 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
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.
- 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 computedSeverity91% × 45%Exploitation40% × 40%Automatability100% × 15%Action: Remediate soon — notable exploitation risk. - EPSS PROB
- 0%
- EPSS %ILE
- 26%
- KEV
- Not listed
Published
July 28, 2026
Last Modified
July 30, 2026
Advisory Details (3)
Auto-updated Jul 28, 2026🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release.
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-8qq3github_release Patch Available
v2.1.4
Patch available: goshs-labs/goshs v2.1.4
https://github.com/goshs-labs/goshs/releases/tag/v2.1.4github_commit
commit 0444ac6b1a81 (goshs-labs/goshs)
Fix landed in goshs-labs/goshs commit 0444ac6b1a81 — awaiting tagged release
https://github.com/goshs-labs/goshs/commit/0444ac6b1a8176ddae70d940adf7a26b2e5a6c29Vendor 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)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| 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 11× in last 7d / 11× 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.
- 2026-07-30 19:44 UTCEG score recompute
- 2026-07-30 16:28 UTCEPSS rescore
- 2026-07-30 11:50 UTCEG score recompute
- 2026-07-30 02:47 UTCEG score recompute
- 2026-07-30 01:30 UTCEPSS rescore
- 2026-07-30 01:30 UTCEPSS rescore
- 2026-07-29 18:00 UTCEG score recompute
- 2026-07-29 13:38 UTCEG score recompute
- 2026-07-29 13:19 UTCEG score recompute
- 2026-07-28 23:23 UTCEG score recompute
- 2026-07-28 22:17 UTCEG score recompute
Related CVEs(same CWE)
Same CWE
10 shownCWE-284
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 73.8% 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
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-64863
Is Your Infrastructure Affected by CVE-2026-64863?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.