CVE-2026-35393
goshs, a simple HTTP server written in Go, had a critical flaw that let attackers upload files to any directory on the server. The issue was fixed in version 2.0.0‑beta.3. Users should update to that version or later.
An official fix is available, so this entry is kept for 30 days and then removed automatically.
Who is affected
goshs SimpleHTTPServer, versions before 2.0.0‑beta.3, typically used by developers and small‑scale web services.
Real-world impact
An attacker could upload a file to any location on the server, potentially overwriting system files or placing malicious code that could be executed later.
Why this severity
The CVSS score of 9.8 reflects that the vulnerability is network‑accessible, requires no user interaction, and gives an attacker full control over confidentiality, integrity, and availability.
What to do about it
- 01Upgrade goshs to version 2.0.0‑beta.3 or later.
- 02Restart the server to apply the update.
NVD-referenced vendor advisory
Timeline
- Apr 6, 2026 · Apr 6, 2026PublishedDisclosed and added to the National Vulnerability Database.
- Jul 24, 2026 · 11d agoAdvisory updatedThe NVD record was last revised.
- Jul 26, 2026 · 10d agoOfficial fix availableA vendor patch or mitigation now exists — see the remediation steps above.
How it’s attacked
References & advisories
- github.com/patrickhener/goshs/security…exploitmitigationvendor advisory