How severe is CVE-2009-2104?

CVE-2009-2104 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2009-2104 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-2009-2104?

CVE-2009-2104 affects Udo Von Eynern Modern Guest Book Commenting System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2009-2104?

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

When was CVE-2009-2104 published?

CVE-2009-2104 was published on 2009-06-17 and last updated on 2026-06-16.

CVE-2009-2104

CVE-2009-2104 is a medium-severity vulnerability in Udo Von Eynern Modern Guest Book Commenting System 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: Udo Von Eynern Modern Guest Book Commenting System
Published: 2009-06-17
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in the Modern Guestbook / Commenting System (ve_guestbook) extension 2.7.1 and earlier for TYPO3 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Frequently asked questions

What is CVE-2009-2104?: Cross-site scripting (XSS) vulnerability in the Modern Guestbook / Commenting System (ve_guestbook) extension 2.7.1 and earlier for TYPO3 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
How severe is CVE-2009-2104?: CVE-2009-2104 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2009-2104 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-2009-2104?: CVE-2009-2104 affects Udo Von Eynern Modern Guest Book Commenting System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2009-2104?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2009-2104 published?: CVE-2009-2104 was published on 2009-06-17 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:udo_von_eynern:modern_guest_book_commenting_system:*:*:*:*:*:*:*:*

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