How severe is CVE-2008-4903?

CVE-2008-4903 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2008-4903 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-4903?

CVE-2008-4903 primarily affects Typosphere Typo. In total, 31 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-4903?

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

When was CVE-2008-4903 published?

CVE-2008-4903 was published on 2008-11-04 and last updated on 2026-06-16.

CVE-2008-4903

CVE-2008-4903 is a medium-severity vulnerability in Typosphere Typo 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% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Typosphere Typo
Published: 2008-11-04
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in the leave comment (feedback) feature in Typo 5.1.3 and earlier allows remote attackers to inject arbitrary web script or HTML via the (1) comment[author] (Name) and (2) comment[url] (Website) parameters.

Frequently asked questions

What is CVE-2008-4903?: Cross-site scripting (XSS) vulnerability in the leave comment (feedback) feature in Typo 5.1.3 and earlier allows remote attackers to inject arbitrary web script or HTML via the (1) comment[author] (Name) and (2) comment[url] (Website) parameters.
How severe is CVE-2008-4903?: CVE-2008-4903 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2008-4903 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-4903?: CVE-2008-4903 primarily affects Typosphere Typo. In total, 31 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-4903?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-4903 published?: CVE-2008-4903 was published on 2008-11-04 and last updated on 2026-06-16.

References

Affected products (31)

cpe:2.3:a:typosphere:typo:*:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:1.6:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:1.6.8:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:2.0.0:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:2.0.1:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:2.0.5:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:2.0.6:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:2.5.0:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:2.5.1:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:2.5.2:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:2.5.3:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:2.5.4:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:2.5.5:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:2.5.6:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:2.5.7:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:2.5.8:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:2.6.0:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:3.99.0:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:3.99.1:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:3.99.2:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:3.99.3:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:3.99.4:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:4.0.0:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:4.1.1:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:5.0.2:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:5.0.3:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:5.0.3.98:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:5.0.3.98.1:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:5.1:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:5.1.1:*:*:*:*:*:*:*
cpe:2.3:a:typosphere:typo:5.1.2:*:*:*:*:*:*:*

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