CVE-2026-50139

goshs: Share-link ?token=… redemption races past download limit

Published Aug 18, 2026 CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Description
goshs is a SimpleHTTPServer written in Go. Prior to version 2.1.0, `ShareHandler` reads the share token's `DownloadLimit` under `RLock`, releases the lock, serves the file, then re-acquires the lock to increment the counter. Concurrent requests all read the same `Downloaded`/`DownloadLimit` snapshot, all pass the check, and all are served — exceeding the operator's intended cap. Version 2.1.0 patches the issue.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-j48m-h7xq-2xpj goshs: Share-link ?token=… redemption races past download limit
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Patrickhener
Patrickhener goshs
Vendors & Products Patrickhener
Patrickhener goshs
Type Values Removed Values Added
Description goshs is a SimpleHTTPServer written in Go. Prior to version 2.1.0, `ShareHandler` reads the share token's `DownloadLimit` under `RLock`, releases the lock, serves the file, then re-acquires the lock to increment the counter. Concurrent requests all read the same `Downloaded`/`DownloadLimit` snapshot, all pass the check, and all are served — exceeding the operator's intended cap. Version 2.1.0 patches the issue.
Title goshs: Share-link ?token=… redemption races past download limit
Weaknesses CWE-362
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Aug 19, 2026, 2:34 PM
Reserved
Jun 3, 2026, 6:49 PM
Status
Deferred
Published
Aug 18, 2026, 3:16 PM
Modified
Oct 22, 2026, 10:10 PM