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CVE-2012-3540

22
FAUCET Score

CVE-2012-3540 is an open redirect vulnerability in OpenStack Dashboard (Horizon) Essex (2012.1), specifically within the views/auth_forms.py component. This flaw allows remote attackers to redirect users to arbitrary websites, facilitating phishing attacks by manipulating the 'next' parameter in the auth/login/ URL. With a CVSS score of 5.8, this vulnerability has a network attack vector and medium attack complexity, potentially leading to information disclosure and integrity impacts. There is no evidence of active exploitation, nor are there known public exploits in Metasploit or ExploitDB, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2012.1CPE matchmatch criteria
cpe:2.3:a:openstack:horizon:2012.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
4.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.90%
Probability of exploitation in next 30 days
EPSS Percentile
85.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0290 is in the 78th percentile among its peer group of 19,953 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: OpenStack Essex for RHEL 6Fixed in: python-django-horizon-0:2012.1.1-3.el6
View patch

Vendor Advisories (1)

redhatCVE-2012-3540Low

OpenStack-Horizon: Open redirect through 'next' parameter

Aug 30, 2012

References

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