How severe is CVE-2009-3011?

CVE-2009-3011 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2009-3011 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-3011?

CVE-2009-3011 primarily affects Google Chrome. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-3011?

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

When was CVE-2009-3011 published?

CVE-2009-3011 was published on 2009-08-31 and last updated on 2026-06-16.

CVE-2009-3011

CVE-2009-3011 is a medium-severity vulnerability in Google Chrome 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: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Google Chrome
Published: 2009-08-31
Last modified: 2026-06-16

Description

Google Chrome 1.0.154.48 and earlier, 2.0.172.28, 2.0.172.37, and 3.0.193.2 Beta does not properly block data: URIs in Refresh headers in HTTP responses, which allows remote attackers to conduct cross-site scripting (XSS) attacks via vectors related to (1) injecting a Refresh header that contains JavaScript sequences in a data:text/html URI or (2) entering a data:text/html URI with JavaScript sequences when specifying the content of a Refresh header. NOTE: the JavaScript executes outside of the context of the HTTP site.

Frequently asked questions

What is CVE-2009-3011?: Google Chrome 1.0.154.48 and earlier, 2.0.172.28, 2.0.172.37, and 3.0.193.2 Beta does not properly block data: URIs in Refresh headers in HTTP responses, which allows remote attackers to conduct cross-site scripting (XSS) attacks via vectors related to (1) injecting a Refresh header that contains JavaScript sequences in a data:text/html URI or (2) entering a data:text/html URI with JavaScript sequences when specifying the content of a Refresh header. NOTE: the JavaScript executes outside of the context of the HTTP site.
How severe is CVE-2009-3011?: CVE-2009-3011 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2009-3011 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-3011?: CVE-2009-3011 primarily affects Google Chrome. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-3011?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-3011 published?: CVE-2009-3011 was published on 2009-08-31 and last updated on 2026-06-16.

References

Affected products (20)

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:0.2.149.27:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:0.2.149.29:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:0.2.149.30:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:0.2.152.1:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:0.2.153.1:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:0.3.154.0:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:0.3.154.3:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:0.4.154.18:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:0.4.154.22:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:0.4.154.31:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:0.4.154.33:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:1.0.154.36:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:1.0.154.39:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:1.0.154.42:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:1.0.154.43:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:1.0.154.46:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:2.0.172.28:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:2.0.172.37:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:3.0.193.2:beta:*:*:*:*:*:*

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