web2py development tool vulnerable to open redirect


The admin development tool included in the web2py source code contains an open redirect vulnerability (CWE-601).
According to the developer, they do not recommend using the tool in operational environment or disclosing it on the Internet.

Takuto Yoshikai of Aeye Security Lab reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 4.7 (Medium) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Changed
  • Confidentiality Impact: None
  • Integrity Impact: Low
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 2.6 (Low) [IPA Score]
  • Access Vector: Network
  • Access Complexity: High
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: Partial
  • Availability Impact: None
Affected Products

  • web2py versions prior to 2.23.1


When using the tool, a web2py user may be redirected to an arbitrary website by accessing a specially crafted URL. As a result, the user may become a victim of a phishing attack.

[Update the Software]
Update the software to the latest version according to the information provided by the developer.
Vendor Information

CWE (What is CWE?)

  1. Improper Input Validation(CWE-20) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2023-22432

  1. JVN : JVN#78253670
Revision History

  • [2023/02/28]
      Web page was published