CVEvulnerability

CVE-2026-34785

7.5 HIGH Published 2026-04-02 Modified 2026-07-24 Official page ↗
Status
Modified
Published
2026-04-02
Last modified
2026-07-24
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weaknesses
CWE-187, CWE-200, CWE-552

Description

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Static determines whether a request should be served as a static file using a simple string prefix check. When configured with URL prefixes such as "/css", it matches any request path that begins with that string, including unrelated paths such as "/css-config.env" or "/css-backup.sql". As a result, files under the static root whose names merely share the configured prefix may be served unintentionally, leading to information disclosure. This issue has been patched in versions 2.2.23, 3.1.21, and 3.2.6.

Affected configurations

• rack rack (< 2.2.23) • rack rack (>= 3.0.0 < 3.1.21) • rack rack (>= 3.2.0 < 3.2.6)

Related

Weakness · CWE (3)

  • CWE-187 Partial String Comparison weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness
  • CWE-552 Files or Directories Accessible to External Parties weakness

References