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.

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

Q: 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.

Q: 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.

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), github.com/patrickhener/goshs/v2 (Go), Goshs. Vendors: Go, 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
```
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

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