CVE-2009-1030

Exp

Cross-site scripting (XSS) vulnerability in the choose_primary_blog function in wp-includes/wpmu-functions.php in WordPress MU (WPMU) before 2.7 allows remote attackers to inject arbitrary web script or HTML via the HTTP Host header.

Published: 2009-03-20 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-1030 is rated High Exploit Risk (62.4/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.28%). 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-2009-1030

EDB-ID Source Kind Published Link
8196 exploit_db edb 2009-03-10 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2009-1030

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 2026-05-10 1.78% 2.28% +0.49%
2 2026-01-02 1.04% 1.78% +0.74%
3 2025-03-30 — 1.04% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-1030

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-2009-1030

OS Trackers for CVE-2009-1030

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2009-1030

Affected software / configurations for CVE-2009-1030

Vendor Product Version Raw CPE
wordpress wordpress_mu <= 2.6 cpe:2.3:a:wordpress:wordpress_mu:*:*:*:*:*:*:*:*
wordpress wordpress_mu 1.0 cpe:2.3:a:wordpress:wordpress_mu:1.0:*:*:*:*:*:*:*
wordpress wordpress_mu 1.0 cpe:2.3:a:wordpress:wordpress_mu:1.0:rc1:*:*:*:*:*:*
wordpress wordpress_mu 1.0 cpe:2.3:a:wordpress:wordpress_mu:1.0:rc2:*:*:*:*:*:*
wordpress wordpress_mu 1.0 cpe:2.3:a:wordpress:wordpress_mu:1.0:rc3:*:*:*:*:*:*
wordpress wordpress_mu 1.0 cpe:2.3:a:wordpress:wordpress_mu:1.0:rc4:*:*:*:*:*:*
wordpress wordpress_mu 1.1 cpe:2.3:a:wordpress:wordpress_mu:1.1:*:*:*:*:*:*:*
wordpress wordpress_mu 1.1.1 cpe:2.3:a:wordpress:wordpress_mu:1.1.1:*:*:*:*:*:*:*
wordpress wordpress_mu 1.2 cpe:2.3:a:wordpress:wordpress_mu:1.2:*:*:*:*:*:*:*
wordpress wordpress_mu 1.2.1 cpe:2.3:a:wordpress:wordpress_mu:1.2.1:*:*:*:*:*:*:*
wordpress wordpress_mu 1.2.2 cpe:2.3:a:wordpress:wordpress_mu:1.2.2:*:*:*:*:*:*:*
wordpress wordpress_mu 1.2.3 cpe:2.3:a:wordpress:wordpress_mu:1.2.3:*:*:*:*:*:*:*
wordpress wordpress_mu 1.2.4 cpe:2.3:a:wordpress:wordpress_mu:1.2.4:*:*:*:*:*:*:*
wordpress wordpress_mu 1.2.4 cpe:2.3:a:wordpress:wordpress_mu:1.2.4:rc1:*:*:*:*:*:*
wordpress wordpress_mu 1.2.5a cpe:2.3:a:wordpress:wordpress_mu:1.2.5a:*:*:*:*:*:*:*
wordpress wordpress_mu 1.3 cpe:2.3:a:wordpress:wordpress_mu:1.3:*:*:*:*:*:*:*
wordpress wordpress_mu 1.3.1 cpe:2.3:a:wordpress:wordpress_mu:1.3.1:*:*:*:*:*:*:*
wordpress wordpress_mu 1.3.2 cpe:2.3:a:wordpress:wordpress_mu:1.3.2:*:*:*:*:*:*:*
wordpress wordpress_mu 1.3.3 cpe:2.3:a:wordpress:wordpress_mu:1.3.3:*:*:*:*:*:*:*
wordpress wordpress_mu 1.5 cpe:2.3:a:wordpress:wordpress_mu:1.5:rc1:*:*:*:*:*:*
wordpress wordpress_mu 1.5.1 cpe:2.3:a:wordpress:wordpress_mu:1.5.1:*:*:*:*:*:*:*
wordpress wordpress_mu 2.6.1 cpe:2.3:a:wordpress:wordpress_mu:2.6.1:*:*:*:*:*:*:*
wordpress wordpress_mu 2.6.2 cpe:2.3:a:wordpress:wordpress_mu:2.6.2:*:*:*:*:*:*:*
wordpress wordpress_mu 2.6.3 cpe:2.3:a:wordpress:wordpress_mu:2.6.3:*:*:*:*:*:*:*
wordpress wordpress_mu 2.6.5 cpe:2.3:a:wordpress:wordpress_mu:2.6.5:*:*:*:*:*:*:*
wordpress wordpress_mu 2.7 cpe:2.3:a:wordpress:wordpress_mu:2.7:*:*:*:*:*:*:*

References for CVE-2009-1030

cvelogic Threat Intelligence