CVE-2026-64863 goshs --no-delete WebDAV MOVE bypass allows file deletion/overwrite
Attackers can bypass file deletion protections in goshs WebDAV servers to delete or overwrite files when the no-delete feature is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-64863?
CVE-2026-64863 is a critical missing authorization vulnerability in goshs-labs goshs, published on 28 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-284
Which versions are affected by CVE-2026-64863?
11 open source packages ship an affected version, including github.com/patrickhener/goshs, github.com/patrickhener/goshs/v2 and goshs.de/goshs.
| Package | Affected | Fixed in |
|---|---|---|
github.com/patrickhener/goshs Go | All versions | None |
github.com/patrickhener/goshs Go | All versions to 1.1.4 | None |
github.com/patrickhener/goshs Go | All versions to 1.1.4 | None |
github.com/patrickhener/goshs/v2 Go | All versions | 2.1.4 |
github.com/patrickhener/goshs/v2 Go | All versions | 2.1.4 |
goshs.de/goshs Go | All versions | None |
5 more packages
goshs.de/goshs Go | All versions to 1.1.4 | None |
goshs.de/goshs Go | All versions to 1.1.4 | None |
goshs.de/goshs/v2 Go | All versions | 2.1.4 |
goshs.de/goshs/v2 Go | All versions | 2.1.4 |
goshs.de/goshs/v2 Go | All versions | 2.1.4 |
How do I fix CVE-2026-64863?
Upgrade to a fixed version.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-64863 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-64863 exists.
Sources
Also known as GHSA-hq33-8jgp-8qq3, GO-2026-6136.