CVEvulnerability

CVE-2021-23435

6.1 MEDIUM Published 2021-09-12 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-09-12
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.6 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
CVSS 3.1 ([email protected])
6.1 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0 ([email protected])
5.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:N
Weaknesses
CWE-601

Description

This affects the package clearance before 2.5.0. The vulnerability can be possible when users are able to set the value of session[:return_to]. If the value used for return_to contains multiple leading slashes (/////example.com) the user ends up being redirected to the external domain that comes after the slashes (http://example.com).

Affected configurations

• thoughtbot clearance (< 2.5.0)

Related

Weakness · CWE (1)

  • CWE-601 URL Redirection to Untrusted Site weakness

References