7.5 CVE-2026-34785

Enriched by CISA
 

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.
https://nvd.nist.gov/vuln/detail/CVE-2026-34785

Categories

CWE-187 : Partial String Comparison
For example, an attacker might succeed in authentication by providing a small password that matches the associated portion of the larger, correct password.

References


 

AFFECTED (from MITRE)

Vendor Product Versions
rack rack
  • < 2.2.23 [affected]
  • >= 3.0.0.beta1, < 3.1.21 [affected]
  • >= 3.2.0, < 3.2.6 [affected]
© 2022 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation.

CPE

cpe start end

REMEDIATION


EXPLOITS

Exploit-db.com

id description date
No known exploits

POC Github

Url
No known exploits

Other Nist (github, ...)

Url
No known exploits

CAPEC

Common Attack Pattern Enumerations and Classifications

id description severity
No entry