CVE-2023-22432 — web2py
MEDIUMCVE-2023-22432 is a medium-severity (CVSS 6.1) Open Redirect vulnerability in web2py. 2 public exploit or proof-of-concept references are indexed, so weaponization risk is real. A fix is available for web2py — see the affected versions and patch details below.
Open redirect in web2py
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2023-22432.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
web2pyReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
Open redirect vulnerability exists in 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.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | web2py | all versions | 2.23.1pip install --upgrade 'web2py==2.23.1' |
Affected Products
web2pyweb2pyResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for web2py, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update web2py to 2.23.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-22432 is resolved across your whole dependency graph.
Workarounds
Stop reflecting attacker-controlled destinations: resolve every redirect target against an allowlist of paths or hosts you own, prefer a server-side key over a full URL in the request, and reject absolute URLs entirely where the flow only ever needs a relative one.
How to detect CVE-2023-22432
A community-maintained Nuclei template exists for this CVE. You can scan for it directly:
nuclei -id cve-2023-22432 -u https://target- Template
- Web2py URL - Open Redirect
- Severity
- medium
- Impact
- Authenticated attackers can exploit open redirect through the send parameter to redirect users to malicious websites for phishing attacks.
- Remediation
- Update to web2py 2.23.1 or higher.
Template by ProjectDiscovery nuclei-templates (DhiyaneshDK), MIT licensed. View the full template. Scan only systems you are authorised to test.
Frequently Asked Questions
Is CVE-2023-22432 in your dependencies?
Find it across PyPI, including transitive dependencies.