CVE-2009-4851

The activation resend function in the Profiles module in XOOPS before 2.4.1 sends activation codes in response to arbitrary activation requests, which allows remote attackers to bypass administrative approval via a request involving activate.php.

Published: 2010-05-07 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-4851 is rated Moderate Risk (43.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.21%). Review affected assets and schedule remediation.

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-2009-4851

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 0.33% 1.21% +0.88%
2 2024-04-25 0.22% 0.33% +0.11%
3 2024-02-08 — 0.22% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-4851

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/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:L)
Exploitation conditions are straightforward and predictable.
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.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2009-4851

Affected software / configurations for CVE-2009-4851

Vendor Product Version Raw CPE
xoops xoops <= 2.4.0 cpe:2.3:a:xoops:xoops:*:*:*:*:*:*:*:*
xoops xoops 1.0 cpe:2.3:a:xoops:xoops:1.0:*:*:*:*:*:*:*
xoops xoops 1.0_rc1 cpe:2.3:a:xoops:xoops:1.0_rc1:*:*:*:*:*:*:*
xoops xoops 1.0_rc3 cpe:2.3:a:xoops:xoops:1.0_rc3:*:*:*:*:*:*:*
xoops xoops 1.0_rc3.0.5 cpe:2.3:a:xoops:xoops:1.0_rc3.0.5:*:*:*:*:*:*:*
xoops xoops 1.3.5 cpe:2.3:a:xoops:xoops:1.3.5:*:*:*:*:*:*:*
xoops xoops 1.3.6 cpe:2.3:a:xoops:xoops:1.3.6:*:*:*:*:*:*:*
xoops xoops 1.3.7 cpe:2.3:a:xoops:xoops:1.3.7:*:*:*:*:*:*:*
xoops xoops 1.3.8 cpe:2.3:a:xoops:xoops:1.3.8:*:*:*:*:*:*:*
xoops xoops 1.3.9 cpe:2.3:a:xoops:xoops:1.3.9:*:*:*:*:*:*:*
xoops xoops 1.3.10 cpe:2.3:a:xoops:xoops:1.3.10:*:*:*:*:*:*:*
xoops xoops 2.0.0 cpe:2.3:a:xoops:xoops:2.0.0:*:*:*:*:*:*:*
xoops xoops 2.0.0_rc1 cpe:2.3:a:xoops:xoops:2.0.0_rc1:*:*:*:*:*:*:*
xoops xoops 2.0.0_rc2 cpe:2.3:a:xoops:xoops:2.0.0_rc2:*:*:*:*:*:*:*
xoops xoops 2.0.0_rc3 cpe:2.3:a:xoops:xoops:2.0.0_rc3:*:*:*:*:*:*:*
xoops xoops 2.0.1 cpe:2.3:a:xoops:xoops:2.0.1:*:*:*:*:*:*:*
xoops xoops 2.0.2 cpe:2.3:a:xoops:xoops:2.0.2:*:*:*:*:*:*:*
xoops xoops 2.0.3 cpe:2.3:a:xoops:xoops:2.0.3:*:*:*:*:*:*:*
xoops xoops 2.0.4 cpe:2.3:a:xoops:xoops:2.0.4:*:*:*:*:*:*:*
xoops xoops 2.0.5.1 cpe:2.3:a:xoops:xoops:2.0.5.1:*:*:*:*:*:*:*
xoops xoops 2.0.5.2 cpe:2.3:a:xoops:xoops:2.0.5.2:*:*:*:*:*:*:*
xoops xoops 2.0.5_rc cpe:2.3:a:xoops:xoops:2.0.5_rc:*:*:*:*:*:*:*
xoops xoops 2.0.6 cpe:2.3:a:xoops:xoops:2.0.6:*:*:*:*:*:*:*
xoops xoops 2.0.7 cpe:2.3:a:xoops:xoops:2.0.7:*:*:*:*:*:*:*
xoops xoops 2.0.7.1 cpe:2.3:a:xoops:xoops:2.0.7.1:*:*:*:*:*:*:*
xoops xoops 2.0.7.2 cpe:2.3:a:xoops:xoops:2.0.7.2:*:*:*:*:*:*:*
xoops xoops 2.0.7.3 cpe:2.3:a:xoops:xoops:2.0.7.3:*:*:*:*:*:*:*
xoops xoops 2.0.9 cpe:2.3:a:xoops:xoops:2.0.9:*:*:*:*:*:*:*
xoops xoops 2.0.9.2 cpe:2.3:a:xoops:xoops:2.0.9.2:*:*:*:*:*:*:*
xoops xoops 2.0.9.3 cpe:2.3:a:xoops:xoops:2.0.9.3:*:*:*:*:*:*:*
xoops xoops 2.0.10 cpe:2.3:a:xoops:xoops:2.0.10:*:*:*:*:*:*:*
xoops xoops 2.0.10_rc cpe:2.3:a:xoops:xoops:2.0.10_rc:*:*:*:*:*:*:*
xoops xoops 2.0.11 cpe:2.3:a:xoops:xoops:2.0.11:*:*:*:*:*:*:*
xoops xoops 2.0.12 cpe:2.3:a:xoops:xoops:2.0.12:*:*:*:*:*:*:*
xoops xoops 2.0.12a cpe:2.3:a:xoops:xoops:2.0.12a:*:*:*:*:*:*:*
xoops xoops 2.0.13 cpe:2.3:a:xoops:xoops:2.0.13:*:*:*:*:*:*:*
xoops xoops 2.0.13.1 cpe:2.3:a:xoops:xoops:2.0.13.1:*:*:*:*:*:*:*
xoops xoops 2.0.13.2 cpe:2.3:a:xoops:xoops:2.0.13.2:*:*:*:*:*:*:*
xoops xoops 2.0.14 cpe:2.3:a:xoops:xoops:2.0.14:*:*:*:*:*:*:*
xoops xoops 2.0.14-rc1 cpe:2.3:a:xoops:xoops:2.0.14-rc1:*:*:*:*:*:*:*
xoops xoops 2.0.15 cpe:2.3:a:xoops:xoops:2.0.15:*:*:*:*:*:*:*
xoops xoops 2.0.16 cpe:2.3:a:xoops:xoops:2.0.16:*:*:*:*:*:*:*
xoops xoops 2.0.17 cpe:2.3:a:xoops:xoops:2.0.17:*:*:*:*:*:*:*
xoops xoops 2.0.17.1 cpe:2.3:a:xoops:xoops:2.0.17.1:*:*:*:*:*:*:*
xoops xoops 2.0.18 cpe:2.3:a:xoops:xoops:2.0.18:*:*:*:*:*:*:*
xoops xoops 2.0.18.1 cpe:2.3:a:xoops:xoops:2.0.18.1:*:*:*:*:*:*:*
xoops xoops 2.3.0 cpe:2.3:a:xoops:xoops:2.3.0:*:*:*:*:*:*:*
xoops xoops 2.3.0_alpha_3 cpe:2.3:a:xoops:xoops:2.3.0_alpha_3:*:*:*:*:*:*:*
xoops xoops 2.3.0_alpha1 cpe:2.3:a:xoops:xoops:2.3.0_alpha1:*:*:*:*:*:*:*
xoops xoops 2.3.0_alpha2 cpe:2.3:a:xoops:xoops:2.3.0_alpha2:*:*:*:*:*:*:*
xoops xoops 2.3.0_beta cpe:2.3:a:xoops:xoops:2.3.0_beta:*:*:*:*:*:*:*
xoops xoops 2.3.0_rc cpe:2.3:a:xoops:xoops:2.3.0_rc:*:*:*:*:*:*:*
xoops xoops 2.3.0_rc2 cpe:2.3:a:xoops:xoops:2.3.0_rc2:*:*:*:*:*:*:*
xoops xoops 2.3.0_rc3 cpe:2.3:a:xoops:xoops:2.3.0_rc3:*:*:*:*:*:*:*
xoops xoops 2.3.1 cpe:2.3:a:xoops:xoops:2.3.1:*:*:*:*:*:*:*
xoops xoops 2.3.1_rc cpe:2.3:a:xoops:xoops:2.3.1_rc:*:*:*:*:*:*:*
xoops xoops 2.3.2a cpe:2.3:a:xoops:xoops:2.3.2a:*:*:*:*:*:*:*
xoops xoops 2.3.2b cpe:2.3:a:xoops:xoops:2.3.2b:*:*:*:*:*:*:*
xoops xoops 2.3.3 cpe:2.3:a:xoops:xoops:2.3.3:*:*:*:*:*:*:*
xoops xoops 2.4.0_beta_1 cpe:2.3:a:xoops:xoops:2.4.0_beta_1:*:*:*:*:*:*:*
xoops xoops 2.4.0_beta_2 cpe:2.3:a:xoops:xoops:2.4.0_beta_2:*:*:*:*:*:*:*
xoops xoops 2.4.0_rc cpe:2.3:a:xoops:xoops:2.4.0_rc:*:*:*:*:*:*:*

References for CVE-2009-4851

cvelogic Threat Intelligence