# CVE-2026-40883: goshs has CSRF in state-changing GET routes enables authenticated file deletion and directory creation

Source: https://junglewise.ai/threats/cve-2026-40883-goshs-has-csrf-in-state-changing-get-routes-enables-authenticated  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-21. Updated: 2026-05-11  
License: CC BY 4.0 with a link back

CVE-2026-40883 · Severity: high · CVSS 8.1 · Published 2026-04-21

goshs is a SimpleHTTPServer written in Go. From 2.0.0-beta.4 to 2.0.0-beta.5, goshs contains a cross-site request forgery issue in its state-changing HTTP GET routes. An external attacker can cause an already authenticated browser to trigger destructive actions such as ?delete and ?mkdir because goshs relies on HTTP basic auth alone and performs no CSRF, Origin, or Referer validation for those routes. This vulnerability is fixed in 2.0.0-beta.6.

Technologies: [github.com/patrickhener/goshs (Go)](https://junglewise.ai/threats/technologies/github-com-patrickhener-goshs), [github.com/patrickhener/goshs/v2 (Go)](https://junglewise.ai/threats/technologies/github-com-patrickhener-goshs-v2), [Goshs](https://junglewise.ai/threats/technologies/goshs). Vendors: [Go](https://junglewise.ai/threats/vendors/go), [Goshs](https://junglewise.ai/threats/vendors/goshs).

## Quick answers

**Is CVE-2026-40883 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-40883 being exploited in the wild.

**How severe is CVE-2026-40883?** High severity, with a CVSS score of 8.1, published 21 April 2026.

**Which products and versions are affected?** github.com/patrickhener/goshs (Go) SEMVER:introduced=0; github.com/patrickhener/goshs/v2 (Go) >= 2.0.0-beta.4, <= 2.0.0-beta.5, SEMVER:introduced=2.0.0-beta.4,fixed=2.0.0-beta.6.

**Is there a fix for CVE-2026-40883?** Yes. github.com/patrickhener/goshs/v2 (Go): upgrade to 2.0.0-beta.6 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2026-40883?** Check whether you run github.com/patrickhener/goshs (Go), github.com/patrickhener/goshs/v2 (Go) or Goshs at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- github.com/patrickhener/goshs/v2 (Go): upgrade to 2.0.0-beta.6 or later

  ```sh
  go get github.com/patrickhener/goshs/v2@v2.0.0-beta.6
  ```


## Affected products

- github.com/patrickhener/goshs (Go) SEMVER:introduced=0
- github.com/patrickhener/goshs/v2 (Go) >= 2.0.0-beta.4, <= 2.0.0-beta.5, SEMVER:introduced=2.0.0-beta.4,fixed=2.0.0-beta.6
- Goshs

## Identifiers

- CVE-2026-40883
- GHSA-jrq5-hg6x-j6g3
- GO-2026-5479

## References

- [https://api.github.com/users/R1ZZG0D](https://api.github.com/users/R1ZZG0D)
- [https://github.com/R1ZZG0D](https://github.com/R1ZZG0D)
- [https://api.github.com/users/R1ZZG0D/gists%7B/gist_id%7D](https://api.github.com/users/R1ZZG0D/gists%7B/gist_id%7D)
- [https://api.github.com/users/R1ZZG0D/repos](https://api.github.com/users/R1ZZG0D/repos)
- [https://avatars.githubusercontent.com/u/72493187?v=4](https://avatars.githubusercontent.com/u/72493187?v=4)
- [https://api.github.com/users/R1ZZG0D/events%7B/privacy%7D](https://api.github.com/users/R1ZZG0D/events%7B/privacy%7D)

## Related threats

- [goshs-labs goshs ACL bypass via trailing slash in sendFile handler](https://junglewise.ai/threats/cve-2026-66064-goshs-labs-goshs-acl-bypass-via-trailing-slash-in-sendfile)
- [goshs path traversal in multipart upload handler](https://junglewise.ai/threats/cve-2026-66063-goshs-path-traversal-in-multipart-upload-handler)
- [goshs WebDAV deletion bypass via MOVE and COPY methods](https://junglewise.ai/threats/cve-2026-64863-goshs-webdav-deletion-bypass-via-move-and-copy-methods)
- [goshs SFTP authentication bypass via empty password handler logic](https://junglewise.ai/threats/cve-2026-62325-goshs-sftp-authentication-bypass-via-empty-password-handler-logic)
- [goshs-labs goshs authorization bypass in bulkDownload handler](https://junglewise.ai/threats/cve-2026-54719-goshs-labs-goshs-authorization-bypass-in-bulkdownload-handler)