How severe is CVE-2008-0418?

CVE-2008-0418 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2008-0418 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-0418?

CVE-2008-0418 primarily affects Mozilla Firefox. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-0418?

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

When was CVE-2008-0418 published?

CVE-2008-0418 was published on 2008-02-08 and last updated on 2026-06-16.

CVE-2008-0418

CVE-2008-0418 is a medium-severity vulnerability in Mozilla Firefox 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-22.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 9% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Mozilla Firefox
Published: 2008-02-08
Last modified: 2026-06-16

Description

Directory traversal vulnerability in Mozilla Firefox before 2.0.0.12, Thunderbird before 2.0.0.12, and SeaMonkey before 1.1.8, when using "flat" addons, allows remote attackers to read arbitrary Javascript, image, and stylesheet files via the chrome: URI scheme, as demonstrated by stealing session information from sessionstore.js.

Frequently asked questions

What is CVE-2008-0418?: Directory traversal vulnerability in Mozilla Firefox before 2.0.0.12, Thunderbird before 2.0.0.12, and SeaMonkey before 1.1.8, when using "flat" addons, allows remote attackers to read arbitrary Javascript, image, and stylesheet files via the chrome: URI scheme, as demonstrated by stealing session information from sessionstore.js.
How severe is CVE-2008-0418?: CVE-2008-0418 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2008-0418 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-0418?: CVE-2008-0418 primarily affects Mozilla Firefox. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-0418?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-0418 published?: CVE-2008-0418 was published on 2008-02-08 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:seamonkey:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

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