CVE-2026-40885

goshs: Public collaborator feed leaks .goshs ACL credentials and enables unauthorized access

HIGH
8.8
CVSS Score
Published: April 21, 2026 at 07:40 PM UTC
Updated: October 26, 2026 at 09:10 PM UTC
2 products affected across 2 vendorsGoshsGoshs

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Severity
HIGH8.8
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

goshs is a SimpleHTTPServer written in Go. From 2.0.0-beta.4 to 2.0.0-beta.5, goshs leaks file-based ACL credentials through its public collaborator feed when the server is deployed without global basic auth. Requests to .goshs-protected folders are logged before authorization is enforced, and the collaborator websocket broadcasts raw request headers, including Authorization. An unauthenticated observer can capture a victim's folder-specific basic-auth header and replay it to read, upload, overwrite, and delete files inside the protected subtree. This vulnerability is fixed in 2.0.0-beta.6.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

2.0.0-beta.4 ≤ v < 2.0.0-beta.6
Affected range stops below 2.0.0-beta.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

x_refsource_CONFIRMExploitVendor Advisory
Source: cverecord
https://github.com/patrickhener/goshs/security/advisories/GHSA-7h3j-592v-jcrp

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-200NVD-CWE-noinfo

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