CVE-2026-34763
Last modified
CVE-2026-34763 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Directory interpolates the configured root path directly into a regular expression when deriving the displayed directory path. EPSS estimates a 0.24% chance of exploitation in the next 30 days.
Description
Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Directory interpolates the configured root path directly into a regular expression when deriving the displayed directory path. If root contains regex metacharacters such as +, *, or ., the prefix stripping can fail and the generated directory listing may expose the full filesystem path in the HTML output. This issue has been patched in versions 2.2.23, 3.1.21, and 3.2.6.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Rack | Rack | < 2.2.23 |
| Rack | Rack | >= 3.0.0, < 3.1.21 |
| Rack | Rack | >= 3.2.0, < 3.2.6 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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