Webrick
Vendor:
First CVE: Mar 4, 2008 · Active for 18 years
5
Total CVEs
More Total CVEs than 77% of tracked products
1.0
Avg CVEs / Year
Bottom 1%
6.3
Avg CVSS
Higher Avg CVSS than 26% of tracked products
0.0%
KEV Rate
Bottom 1%
Trends Over Time
The number and severity of CVEs published that impact Webrick over time
Volume of CVEsAvg CVSS Base Score
First CVE
Mar 4, 2008
18 years ago
Most Recent CVE
Jun 25, 2025
395 days ago
CVE Severity & Scoring
Webrick5 CVEs
60%
40%
All CVEs352,294 CVEs
45%
40%
11%
MediumHigh
Attack Vector
Local1 (20.0%)
Network2 (40.0%)
Unknown2 (40.0%)
Physical0 (0.0%)
Adjacent Network0 (0.0%)
Attack Complexity
Low2 (40.0%)
High1 (20.0%)
Unknown2 (40.0%)
User Interaction
None3 (60.0%)
Unknown2 (40.0%)
Required0 (0.0%)
Privileges Required
Low1 (20.0%)
High0 (0.0%)
None2 (40.0%)
Unknown2 (40.0%)
Top CVEs
Signals from CVEs in this product scope (5 CVEs).
5 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2009-4492HIGH WEBrick 1.3.1 in Ruby 1.8.6 through patchlevel 383, 1.8.7 through patchlevel 248, 1.8.8dev, 1.9.1 through patchlevel 376, and 1.9.2dev writes data to a log file without sanitizing | Jan 13, 2010 | 7.5 | 39 | NO | YES |
CVE-2008-1145MEDIUM Directory traversal vulnerability in WEBrick in Ruby 1.8 before 1.8.5-p115 and 1.8.6-p114, and 1.9 through 1.9.0-1, when running on systems that support backslash (\) path separato | Mar 4, 2008 | 5.0 | 35 | NO | YES |
CVE-2020-25613HIGH An issue was discovered in Ruby through 2.5.8, 2.6.x through 2.6.6, and 2.7.x through 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding | Oct 6, 2020 | 7.5 | 26 | NO | NO |
CVE-2019-11879MEDIUM The WEBrick gem 1.4.2 for Ruby allows directory traversal if the attacker once had local access to create a symlink to a location outside of the web root directory. NOTE: The vendo | May 10, 2019 | 5.5 | 19 | NO | NO |
CVE-2025-6442MEDIUM Ruby WEBrick read_header HTTP Request Smuggling Vulnerability. This vulnerability allows remote attackers to smuggle arbitrary HTTP requests on affected installations of Ruby WEBri | Jun 25, 2025 | 5.9 | 18 | NO | NO |
Exploit Exposure
Signals from CVEs in this product scope (5 CVEs).
CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
2 CVEs
40.0% of CVEs· 91st percentile
Social Chatter
Signals from CVEs in this product scope (5 CVEs).
Media Mentions
Signals from CVEs in this product scope (5 CVEs).
Top CNAs Publishing CVEs For Webrick
Top CWEs
Versions
| Version | CVE Count | Avg CVSS | Avg EPSS | KEV | Exploits |
|---|---|---|---|---|---|
| 1.4.2 | 1 | 5.5 | 0.5% | 0 | 0 |
| 1.3.1 | 1 | 7.5 | 15.7% | 0 | 1 |