Security Digest · Vulnerability record
CVE-2025-46816: goshs route not protected, allows command execution
goshs is a SimpleHTTPServer written in Go.
CVSS 9.4 Critical EPSS 0.7% · p54
Should you act?
Critical and remotely reachable
No known exploitation yet, but it is network-reachable without credentials. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- Not in CISA KEV, but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.7%, percentile 54: FIRST’s model estimates a 0.7% chance of exploitation activity in the next 30 days, higher than 54% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes
github.com/patrickhener/goshs(Go) >= 0.3.4, <= 1.0.4, fixed in 1.0.5. Check your lockfile, including transitive dependencies.
What it is
goshs is a SimpleHTTPServer written in Go. Starting in version 0.3.4 and prior to version 1.0.5, running goshs without arguments makes it possible for anyone to execute commands on the server. The function dispatchReadPump does not checks the option cli -c, thus allowing anyone to execute arbitrary command through the use of websockets. Version 1.0.5 fixes the issue.
From the GitHub advisory
Summary
It seems that when running goshs without arguments it is possible for anyone to execute commands on the server. This was tested on version 1.0.4 of goshs. The command function was introduced in version 0.3.4.
Details
It seems that the function does not checks the option cli , thus allowing anyone to execute arbitrary command through the use of websockets.
PoC
Weakness type: CWE-284, CWE-77.
Product: github.com/patrickhener/goshs (Go) · Assigned by: GitHub_M · Published: 2025-05-06
Affected and fixed versions
| Ecosystem | Package | Vulnerable | First fixed |
|---|---|---|---|
| Go | github.com/patrickhener/goshs | >= 0.3.4, <= 1.0.4 | 1.0.5 |
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| patrickhener | goshs | >= 0.3.4, < 1.0.5 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_M | 3.0 | 9.4 Critical | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L |
| GitHub | 3.1 | 9.4 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Privileges required: none (no login)
- User interaction: none
- Scope: unchanged
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc, automatable yes, technical impact total.
- FIRST EPSS (model of 2026-10-21): 0.74% probability of exploitation activity in the next 30 days; percentile 54.
Timeline
- — CVE record last updated
- — CVE record published by GitHub_M
- — GitHub-reviewed advisory GHSA-rwj2-w85g-5cmm published (critical)
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vulnerability records
- GitHub Advisory GHSA-rwj2-w85g-5cmm github.com
- CVE.org record CVE-2025-46816 cve.org
- NVD entry CVE-2025-46816 nvd.nist.gov
Other references from the CVE record and advisory
- github.com github.com
- github.com github.com