CVSS 3.1
5.3 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NCVE-2026-34763
Medium (5.3) in rack rack. EPSS 0.2% chance of exploitation in the next 30 days. Fixed in rack 2.2.23, 3.1.21, 3.2.6.
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.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 16% of CVEs (scores of 2026-10-31)
- CWE
- CWE-625
- Published
- Modified
- Record from
- the NVD, synced
Affected
- rack:rack
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-7mqq-6cf9-v2qp | RubyGems | rack | <2.2.23 | 2.2.23 |
| GHSA-7mqq-6cf9-v2qp | RubyGems | rack | >=3.0.0.beta1 <3.1.21 | 3.1.21 |
| GHSA-7mqq-6cf9-v2qp | RubyGems | rack | >=3.2.0 <3.2.6 | 3.2.6 |