CVE-2026-50139

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 62/100
Published: 2026-08-18 Modified: 2026-10-22 First seen: 2026-10-29 Status: active

Attack Surface

Network No Auth No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: Unchanged
C: High
I: None
A: None

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.

Weakness Classification (1)

Bug Bounty Relevance

62 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

5.9 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploitation Probability

0.26%
Raw Score 0.002560
Percentile 17.3%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00256
2026-10-28
0.00256

Intelligence Sources

nvd ref →