CVE-2011-4555

One Click Orgs before 1.2.3 does not require unique e-mail addresses for user accounts, which allows remote authenticated users to cause a denial of service (login disruption) or spoof votes or comments by selecting a conflicting e-mail address.

Published: 2011-12-06 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-4555 is rated Low Risk (36.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.40%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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

Exploit prediction scoring system (EPSS) score for CVE-2011-4555

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 2025-03-17 0.16% 0.40% +0.25%
2 2024-09-17 0.13% 0.16% +0.03%
3 2024-02-08 — 0.13% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-4555

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2011-4555

Affected software / configurations for CVE-2011-4555

Vendor Product Version Raw CPE
oneclickorgs one_click_orgs <= 1.2.2 cpe:2.3:a:oneclickorgs:one_click_orgs:*:*:*:*:*:*:*:*
oneclickorgs one_click_orgs 1.0.0 cpe:2.3:a:oneclickorgs:one_click_orgs:1.0.0:*:*:*:*:*:*:*
oneclickorgs one_click_orgs 1.0.1 cpe:2.3:a:oneclickorgs:one_click_orgs:1.0.1:*:*:*:*:*:*:*
oneclickorgs one_click_orgs 1.1.0 cpe:2.3:a:oneclickorgs:one_click_orgs:1.1.0:*:*:*:*:*:*:*
oneclickorgs one_click_orgs 1.1.1 cpe:2.3:a:oneclickorgs:one_click_orgs:1.1.1:*:*:*:*:*:*:*
oneclickorgs one_click_orgs 1.2.0 cpe:2.3:a:oneclickorgs:one_click_orgs:1.2.0:*:*:*:*:*:*:*
oneclickorgs one_click_orgs 1.2.1 cpe:2.3:a:oneclickorgs:one_click_orgs:1.2.1:*:*:*:*:*:*:*

References for CVE-2011-4555

cvelogic Threat Intelligence