How severe is CVE-2008-6171?

CVE-2008-6171 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2008-6171 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-6171?

CVE-2008-6171 primarily affects Drupal. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-6171?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2008-6171 published?

CVE-2008-6171 was published on 2009-02-19 and last updated on 2026-06-16.

CVE-2008-6171

CVE-2008-6171 is a critical-severity vulnerability in Drupal with a CVSS 2.0 base score of 9.3. 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-16.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-16
Affected product: Drupal
Published: 2009-02-19
Last modified: 2026-06-16

Description

includes/bootstrap.inc in Drupal 5.x before 5.12 and 6.x before 6.6, when the server is configured for "IP-based virtual hosts," allows remote attackers to include and execute arbitrary files via the HTTP Host header.

Frequently asked questions

What is CVE-2008-6171?: includes/bootstrap.inc in Drupal 5.x before 5.12 and 6.x before 6.6, when the server is configured for "IP-based virtual hosts," allows remote attackers to include and execute arbitrary files via the HTTP Host header.
How severe is CVE-2008-6171?: CVE-2008-6171 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2008-6171 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-6171?: CVE-2008-6171 primarily affects Drupal. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-6171?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2008-6171 published?: CVE-2008-6171 was published on 2009-02-19 and last updated on 2026-06-16.

References

Affected products (18)

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: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:*:*:*:*:*:*:*

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