lib/thin/connection.rb in Thin web server before 1.2.4 relies on the X-Forwarded-For header to determine the IP address of the client, which allows remote attackers to spoof the IP address and hide activities via a modified X-Forwarded-For header.
rubygems package report
Is thin safe?
1 known vulnerability, worst severity HIGH.
// reach
0 direct dependencies
none carry a known advisory
0 packages depend on it
an advisory here reaches each of them
Create a free accountfor every dependency path, dependent and what to upgrade
// ai model usage
Tracked for PyPI packages. HuggingFace models declare Python dependencies, so rubygems packages are not covered.
cvss
0.0
high
severity band, no base score published
epss
0.00%
medium
chance of exploitation in 30 days, 71st percentile of all CVEs
xyz score
0.0
low
CyberXYZ composite out of 10
fig. 01 — GHSA-j24p-r6wx-r79w, the advisory selected below
// 1 advisories
Checked 2026-10-04 at 01:09 UTC. The most recent advisory here was published 2017-10-24. Updated continuously from NVD, GHSA, OSV and CNA feeds.