CVE-2011-5255

Exp

Multiple cross-site scripting (XSS) vulnerabilities in admin/login in X3 CMS 0.4.3.1 and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) PATH_INFO, (2) username, or (3) password parameter.

Published: 2013-01-31 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-5255 is rated Exploit Available (55.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.62%). 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-2011-5255

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

Exploit prediction scoring system (EPSS) score for CVE-2011-5255

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 2025-03-30 0.67% 0.62% -0.05%
2 2025-03-29 0.56% 0.67% +0.11%
3 2024-12-17 — 0.56% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-5255

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/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:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2011-5255

Affected software / configurations for CVE-2011-5255

Vendor Product Version Raw CPE
x3cms x3_cms <= 0.4.3.1 cpe:2.3:a:x3cms:x3_cms:*:*:*:*:*:*:*:*
x3cms x3_cms 0.4 cpe:2.3:a:x3cms:x3_cms:0.4:rc2:*:*:*:*:*:*
x3cms x3_cms 0.4.0.3 cpe:2.3:a:x3cms:x3_cms:0.4.0.3:*:*:*:*:*:*:*
x3cms x3_cms 0.4.1 cpe:2.3:a:x3cms:x3_cms:0.4.1:*:*:*:*:*:*:*
x3cms x3_cms 0.4.2 cpe:2.3:a:x3cms:x3_cms:0.4.2:*:*:*:*:*:*:*
x3cms x3_cms 0.4.2.1 cpe:2.3:a:x3cms:x3_cms:0.4.2.1:*:*:*:*:*:*:*

References for CVE-2011-5255

cvelogic Threat Intelligence