6.4

CVE-2009-1030: wordpress wpmu Cross-site Scripting

CVSS: 6.4v3.1MediumModified
Published 20-03-2009Last modified 07-08-2024
Open JSON

Vulnerability summary

CVE-2009-1030 is a medium (CVSS 6.4) Cross-site Scripting vulnerability in wordpress wpmu. EPSS estimates a 4.66% chance of exploitation in the next 30 days, higher than 91.6% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 2.7.

Overall risk
37/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.4/10
010
Medium · v3.1 (wordfence)
EPSS score
4.66%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1exploit-database

Timeline

  1. 20-03-2009
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

2 scores · 2 sources · 2 versions

EPSS trend

Probability

4.66%

Chance of exploitation in the next 30 days

Percentile

92%

Versus all other CVEs

30-day change

0.00 pp

From 4.66% on 19-09-2026

19-09-202619-10-2026
EPSS score
4.66%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • exploit-databasephpVerified

    WordPress MU < 2.7 - 'HOST' HTTP Header Cross-Site Scripting

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Wordpress2 products
  • wpmu< 2.7
  • wordpress_mu≤ 2.6 | 1.0 | 1.0:rc1 | 1.0:rc2 | 1.0:rc3 | 1.0:rc4 | 1.1 | 1.1.1 | 1.2 | 1.2.1 | 1.2.2 | 1.2.3 | 1.2.4 | 1.2.4:rc1 | 1.2.5a | 1.3 | 1.3.1 | 1.3.2 | 1.3.3 | 1.5:rc1 | 1.5.1 | 2.6.1 | 2.6.2 | 2.6.3 | 2.6.5 | 2.7

1 vendor · 2 products

References

7 links