Skip to content
Fencer Intel
medium 5.8

CVE-2012-3540 json

Open redirect vulnerability in views/auth_forms.py in OpenStack Dashboard (Horizon) Essex (2012.1) allows remote attackers to redirect user…

published 2012-09-05 14 y ago modified 2026-06-16 4 mo ago also PYSEC-2012-18 , EUVD-2012-0009

cvss
5.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

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.

Patch / fix

  • horizon Debian 14, Debian 13, Debian 12 2012.1.1-4

debian advisories DEBIAN-CVE-2012-3540

  • python-django-horizon openstack 1 2012.1.1-3.el6
  • openstack-dashboard openstack 1 2012.1.1-3.el6

red hat advisories RHSA-2012:1380

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2012-3540 updated cvss 4.3

OpenStack-Horizon: Open redirect through 'next' parameter

  • Red Hat RHOS Essex Release openstack-dashboard 2012.1.1-3.el6, python-django-horizon 2012.1.1-3.el6
    fixed: vendor fix RHSA-2012:1380

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.91% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/openstack/horizon/commit/35eada8a27323c0f83c400177797927aba6bc99b referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N

Affected packages

ecosystem package affected fixed in
pypi horizon
all versions
 no fix listed

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.