How severe is CVE-2009-1070?

CVE-2009-1070 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2009-1070 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-1070?

CVE-2009-1070 primarily affects Expressionengine. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-1070?

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

When was CVE-2009-1070 published?

CVE-2009-1070 was published on 2009-03-26 and last updated on 2026-06-16.

CVE-2009-1070

CVE-2009-1070 is a medium-severity vulnerability in Expressionengine with a CVSS 2.0 base score of 4.3. 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-79.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Expressionengine
Published: 2009-03-26
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in system/index.php in ExpressionEngine 1.6.4 through 1.6.6, and possibly earlier versions, allows remote attackers to inject arbitrary web script or HTML via the avatar parameter.

Frequently asked questions

What is CVE-2009-1070?: Cross-site scripting (XSS) vulnerability in system/index.php in ExpressionEngine 1.6.4 through 1.6.6, and possibly earlier versions, allows remote attackers to inject arbitrary web script or HTML via the avatar parameter.
How severe is CVE-2009-1070?: CVE-2009-1070 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2009-1070 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-1070?: CVE-2009-1070 primarily affects Expressionengine. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-1070?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-1070 published?: CVE-2009-1070 was published on 2009-03-26 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:expressionengine:expressionengine:1.6.4:*:*:*:*:*:*:*
cpe:2.3:a:expressionengine:expressionengine:1.6.5:*:*:*:*:*:*:*
cpe:2.3:a:expressionengine:expressionengine:1.6.6:*:*:*:*:*:*:*

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