CVE-2012-3540

Exp

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.

Published: 2012-09-05 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-3540 is rated High Exploit Risk (69/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.90%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2012-3540

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2012-3540

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.91% 2.90% +0.99%
2 2025-03-30 4.46% 1.91% -2.55%
3 2025-03-29 — 4.46% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-3540

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 4.9 [email protected]

Weakness enumeration for CVE-2012-3540

OS Trackers for CVE-2012-3540

vendor priority summary link
debian not yet assigned CVE-2012-3540 not yet assigned priority: Debian including 1 source packages (horizon), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2012-3540
redhat low — https://access.redhat.com/security/cve/CVE-2012-3540
ubuntu medium CVE-2012-3540 medium priority: Ubuntu including 1 source packages (horizon), 6 status rows across 6 suites (hardy, lucid, natty, oneiric, precise, upstream): DNE 4, released 2. https://ubuntu.com/security/CVE-2012-3540

Affected software / configurations for CVE-2012-3540

Vendor Product Version Raw CPE
openstack horizon 2012.1 cpe:2.3:a:openstack:horizon:2012.1:*:*:*:*:*:*:*

References for CVE-2012-3540

cvelogic Threat Intelligence