# CVE-2026-64863 — goshs-labs goshs

> As of 2026-07-29, CVE-2026-64863 is a CRITICAL-severity vulnerability in goshs-labs goshs, CVSS v3.1 9.1, EPSS 0.3% (26.1th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-64863 as of 2026-07-29; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-07-29

## What is CVE-2026-64863?

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.

The record classifies CVE-2026-64863 under weakness class [CWE-284](https://intel.threadlinqs.com/cwe/CWE-284). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 69 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 9.1 — CRITICAL (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H`)
- **EPSS (FIRST):** 0.3% probability of exploitation in the next 30 days, higher than 26.1% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 5.6/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-07-28, last modified 2026-07-29

## Is CVE-2026-64863 being exploited?

It currently carries a trending score of 36 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [goshs-labs](https://intel.threadlinqs.com/vendors/goshs-labs): goshs

## How to fix CVE-2026-64863

No vendor patch reference has been recorded for CVE-2026-64863 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-64863

No threat campaign in the Threadlinqs corpus currently references CVE-2026-64863, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on 2026-07-29. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com](https://github.com/goshs-labs/goshs/security/advisories/GHSA-hq33-8jgp-8qq3)

**Other references**

- [github.com](https://github.com/goshs-labs/goshs/commit/0444ac6b1a8176ddae70d940adf7a26b2e5a6c29)
- [github.com (v2.1)](https://github.com/goshs-labs/goshs/releases/tag/v2.1.4)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-64863
Full detection coverage and IOCs for threats exploiting CVE-2026-64863 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp