How severe is CVE-2008-2317?

CVE-2008-2317 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2008-2317 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-2317?

CVE-2008-2317 affects Apple Safari. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-2317?

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-2008-2317 published?

CVE-2008-2317 was published on 2008-07-14 and last updated on 2026-06-16.

CVE-2008-2317

CVE-2008-2317 is a critical-severity vulnerability in Apple Safari 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-399.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Apple Safari
Published: 2008-07-14
Last modified: 2026-06-16

Description

WebCore in Apple Safari does not properly perform garbage collection of JavaScript document elements, which allows remote attackers to execute arbitrary code or cause a denial of service (heap corruption and application crash) via a reference to the ownerNode property of a copied CSSStyleSheet object of a STYLE element, as originally demonstrated on Apple iPhone before 2.0 and iPod touch before 2.0, a different vulnerability than CVE-2008-1590.

Frequently asked questions

What is CVE-2008-2317?: WebCore in Apple Safari does not properly perform garbage collection of JavaScript document elements, which allows remote attackers to execute arbitrary code or cause a denial of service (heap corruption and application crash) via a reference to the ownerNode property of a copied CSSStyleSheet object of a STYLE element, as originally demonstrated on Apple iPhone before 2.0 and iPod touch before 2.0, a different vulnerability than CVE-2008-1590.
How severe is CVE-2008-2317?: CVE-2008-2317 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2008-2317 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-2317?: CVE-2008-2317 affects Apple Safari. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-2317?: 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-2008-2317 published?: CVE-2008-2317 was published on 2008-07-14 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*

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