How severe is CVE-2009-1844?

CVE-2009-1844 has a CVSS 2.0 base score of 3.5, rated low severity.

Is CVE-2009-1844 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1844?

CVE-2009-1844 primarily affects Drupal. In total, 29 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-1844?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2009-1844 published?

CVE-2009-1844 was published on 2009-06-01 and last updated on 2026-06-16.

CVE-2009-1844

CVE-2009-1844 is a low-severity vulnerability in Drupal with a CVSS 2.0 base score of 3.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Low (CVSS 2.0 base score 3.5)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Drupal
Published: 2009-06-01
Last modified: 2026-06-16

Description

Multiple cross-site scripting (XSS) vulnerabilities in Drupal 5.x before 5.18 and 6.x before 6.12 allow (1) remote authenticated users to inject arbitrary web script or HTML via crafted UTF-8 byte sequences that are treated as UTF-7 by Internet Explorer 6 and 7, which are not properly handled in the "HTML exports of books" feature; and (2) allow remote authenticated users with administer taxonomy permissions to inject arbitrary web script or HTML via the help text of an arbitrary vocabulary. NOTE: vector 1 exists because of an incomplete fix for CVE-2009-1575.

Frequently asked questions

What is CVE-2009-1844?: Multiple cross-site scripting (XSS) vulnerabilities in Drupal 5.x before 5.18 and 6.x before 6.12 allow (1) remote authenticated users to inject arbitrary web script or HTML via crafted UTF-8 byte sequences that are treated as UTF-7 by Internet Explorer 6 and 7, which are not properly handled in the "HTML exports of books" feature; and (2) allow remote authenticated users with administer taxonomy permissions to inject arbitrary web script or HTML via the help text of an arbitrary vocabulary. NOTE: vector 1 exists because of an incomplete fix for CVE-2009-1575.
How severe is CVE-2009-1844?: CVE-2009-1844 has a CVSS 2.0 base score of 3.5, rated low severity.
Is CVE-2009-1844 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-1844?: CVE-2009-1844 primarily affects Drupal. In total, 29 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-1844?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-1844 published?: CVE-2009-1844 was published on 2009-06-01 and last updated on 2026-06-16.

References

Affected products (29)

cpe:2.3:a:drupal:drupal:5.0:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:5.1:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:5.2:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:5.3:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:5.4:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:5.5:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:5.6:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:5.7:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:5.8:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:5.9:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:5.10:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:5.11:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:5.12:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:5.13:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:5.14:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:5.15:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:5.16:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:6.0:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:6.1:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:6.2:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:6.3:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:6.4:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:6.5:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:6.6:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:6.7:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:6.8:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:6.9:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:6.10:*:*:*:*:*:*:*
cpe:2.3:a:drupal:drupal:6.11:*:*:*:*:*:*:*

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