CVE-2011-4951

Exp

Open redirect vulnerability in phpgwapi/ntlm/index.php in EGroupware Enterprise Line (EPL) before 11.1.20110804-1 and EGroupware Community Edition before 1.8.001.20110805 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the forward parameter.

Published: 2012-08-31 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-4951 is rated High Exploit Risk (60.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.50%). 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-2011-4951

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

Exploit prediction scoring system (EPSS) score for CVE-2011-4951

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 0.75% 0.50% -0.25%
2 2024-12-17 0.64% 0.75% +0.11%
3 2024-09-19 — 0.64% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-4951

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-2011-4951

NVD evaluator notes for CVE-2011-4951

Comment: Per: http://cwe.mitre.org/data/definitions/601.html 'CWE-601: URL Redirection to Untrusted Site ('Open Redirect')'

Affected software / configurations for CVE-2011-4951

Vendor Product Version Raw CPE
egroupware egroupware <= 1.8.001.20110421 cpe:2.3:a:egroupware:egroupware:*:-:community:*:*:*:*:*
egroupware egroupware_enterprise_line <= 11.1.20110711-1 cpe:2.3:a:egroupware:egroupware_enterprise_line:*:*:*:*:*:*:*:*

References for CVE-2011-4951

cvelogic Threat Intelligence