How severe is CVE-2008-5399?

CVE-2008-5399 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2008-5399 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-5399?

CVE-2008-5399 primarily affects Mvnforum. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2008-5399?

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

When was CVE-2008-5399 published?

CVE-2008-5399 was published on 2008-12-10 and last updated on 2026-06-16.

CVE-2008-5399

CVE-2008-5399 is a medium-severity vulnerability in Mvnforum 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% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Mvnforum
Published: 2008-12-10
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in the listonlineusers (aka "Who's online") component in mvnForum before 1.2.1 GA allows remote attackers to inject arbitrary web script or HTML via unspecified parameters.

Frequently asked questions

What is CVE-2008-5399?: Cross-site scripting (XSS) vulnerability in the listonlineusers (aka "Who's online") component in mvnForum before 1.2.1 GA allows remote attackers to inject arbitrary web script or HTML via unspecified parameters.
How severe is CVE-2008-5399?: CVE-2008-5399 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2008-5399 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-5399?: CVE-2008-5399 primarily affects Mvnforum. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2008-5399?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-5399 published?: CVE-2008-5399 was published on 2008-12-10 and last updated on 2026-06-16.

References

Affected products (10)

cpe:2.3:a:mvnforum:mvnforum:*:ga:*:*:*:*:*:*
cpe:2.3:a:mvnforum:mvnforum:1.0.0:beta1:*:*:*:*:*:*
cpe:2.3:a:mvnforum:mvnforum:1.0.0:beta2:*:*:*:*:*:*
cpe:2.3:a:mvnforum:mvnforum:1.0.0:beta3:*:*:*:*:*:*
cpe:2.3:a:mvnforum:mvnforum:1.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:mvnforum:mvnforum:1.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:mvnforum:mvnforum:1.0.0:rc3_01:*:*:*:*:*:*
cpe:2.3:a:mvnforum:mvnforum:1.0.0:rc4:*:*:*:*:*:*
cpe:2.3:a:mvnforum:mvnforum:1.0.2.:ga:*:*:*:*:*:*
cpe:2.3:a:mvnforum:mvnforum:1.1:ga:*:*:*:*:*:*

More vulnerabilities in Mvnforum

CVE-2008-5400 — Medium (CVSS 6.8): Multiple cross-site request forgery (CSRF) vulnerabilities in mvnForum before 1.2.1 GA allow remote attackers to (1)…
CVE-2005-1183 — Medium (CVSS 4.3): Cross-site scripting (XSS) vulnerability in mvnForum 1.0 RC4 allows remote attackers to inject arbitrary web script or…
CVE-2006-3245 — Low (CVSS 2.6): Multiple cross-site scripting (XSS) vulnerabilities in activatemember in mvnForum 1.0 GA and earlier allow remote…

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