How severe is CVE-2008-4340?

CVE-2008-4340 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2008-4340 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-4340?

CVE-2008-4340 primarily affects Google Chrome. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-4340?

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

When was CVE-2008-4340 published?

CVE-2008-4340 was published on 2008-09-30 and last updated on 2026-06-16.

CVE-2008-4340

CVE-2008-4340 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Google Chrome
Published: 2008-09-30
Last modified: 2026-06-16

Description

Google Chrome 0.2.149.29 and 0.2.149.30 allows remote attackers to cause a denial of service (memory consumption) via an HTML document containing a carriage return ("\r\n\r\n") argument to the window.open function.

Frequently asked questions

What is CVE-2008-4340?: Google Chrome 0.2.149.29 and 0.2.149.30 allows remote attackers to cause a denial of service (memory consumption) via an HTML document containing a carriage return ("\r\n\r\n") argument to the window.open function.
How severe is CVE-2008-4340?: CVE-2008-4340 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2008-4340 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-4340?: CVE-2008-4340 primarily affects Google Chrome. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-4340?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-4340 published?: CVE-2008-4340 was published on 2008-09-30 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:google:chrome:0.2.149.29:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:0.2.149.30:*:*:*:*:*:*:*

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