goshs has ACL Bypass & Path Traversal — CVE-2026-66064

Summary

## Summary `sendFile` derives the served filename from the raw request path while opening the file from the cleaned path, so appending a trailing slash empties the derived name and defeats both the never-serve rule for the ACL file and the block list. ## Finding (Medium): trailing-slash ACL and hidden-file bypass httpserver/handler.go, sendFile (lines 789-801) takes the filename from the RAW req.URL.Path while the…

Timeline

Published by source

2026-07-29

Risk context

• Reported severity or threat level: medium.
• Review exposure for the affected product or family: go: github.com/patrickhener/goshs/v2 | go: goshs.de/goshs/v2 | go: github.com/patrickhener/goshs | go: goshs.de/goshs.

Product

go: github.com/patrickhener/goshs/v2 | go: goshs.de/goshs/v2 | go: github.com/patrickhener/goshs | go: goshs.de/goshs

What to do

General, cautious steps (verify details in the official source):

• Review exposure and plan remediation based on risk and environment.
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

Evidence and provenance

Canonical advisory ID

CVE-2026-66064

Source

GitHub

Vendor

GitHub

Published by source

2026-07-29

Last source activity

2026-07-29

Additional identifiers

GHSA-964W-F6GJ-5236

Curated by

hlukh.ch

Related advisories and connections

These advisories are connected by shared CVE, product, vendor, source, or time signals.