webrick Known Vulnerabilities & Fixes
webrick has 4 known security vulnerabilities in RubyGems (Ruby). Upgrade to version 1.8.2 or later to resolve all known issues. Data sourced from OSV, enriched with EPSS exploit probability and CISA KEV.
Low Immediate Risk
No actively exploited vulnerabilities detected. Monitor and update in your next maintenance window.
Recommended safe version: 1.8.2
Upgrading to 1.8.2 or later resolves all 4 known vulnerabilities in webrick. Run: gem install webrick -v 1.8.2
Is webrick in your project?
Check if you're affected and upgrade to 1.8.2 to stay secure.
Security Summary
- 6 affected version ranges have been identified across these 4 advisories.
- 100% of known issues have a published fixed version.
- Remediation: gem update webrick
Vulnerabilities
4 unique vulnerabilities — sorted by exploitation risk (KEV → EPSS → CVSS). Click a CVE/GHSA ID for full details. First disclosed May 14, 2022, most recently Jun 26, 2025 (1140 days apart).
| CVE / GHSA | Severity | Affected | Fixed In |
|---|---|---|---|
| CVE-2017-10784 WEBrick RCE Vulnerability | HIGH | 1.3.1, 1.4.0.beta1 | 1.4.0 |
| CVE-2024-47220 HTTP Request Smuggling in ruby webrick | HIGH | 1.3.1, 1.4.0, 1.4.0.beta1, 1.4.1 (+10 more) | 1.8.2 |
| CVE-2020-25613 WEBRick vulnerable to HTTP Request/Response Smuggling | HIGH | 1.6.0, 1.5.0, 1.3.1, 1.4.0 (+4 more) | 1.6.1, 1.5.1, 1.4.4 |
| CVE-2025-6442 Ruby WEBrick read_headers method can lead to HTTP Request/Response Smuggling | MEDIUM | 1.3.1, 1.4.0, 1.4.0.beta1, 1.4.1 (+10 more) | 1.8.2 |
About This Data
Vulnerability data for webrick is sourced from the Open Source Vulnerability (OSV) database, aggregating reports from GitHub Advisory Database, NIST NVD, and ecosystem-specific sources.
CVSS (Common Vulnerability Scoring System) scores reflect exploitability and impact. EPSS (Exploit Prediction Scoring System) scores indicate the probability of exploitation within the next 30 days. Vulnerabilities marked with are listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
Related RubyGems (Ruby) Packages
Other packages in this ecosystem, ranked by shared vulnerabilities where available.
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