How severe is CVE-2011-0909?

CVE-2011-0909 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2011-0909 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-0909?

CVE-2011-0909 primarily affects Vanillaforums Vanilla. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-0909?

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

When was CVE-2011-0909 published?

CVE-2011-0909 was published on 2011-02-08 and last updated on 2026-06-16.

CVE-2011-0909

CVE-2011-0909 is a medium-severity vulnerability in Vanillaforums Vanilla 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% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Vanillaforums Vanilla
Published: 2011-02-08
Last modified: 2026-06-16

Description

Cross-site scripting (XSS) vulnerability in Vanilla Forums before 2.0.17.6 allows remote attackers to inject arbitrary web script or HTML via the p parameter to an unspecified component, a different vulnerability than CVE-2011-0526.

Frequently asked questions

What is CVE-2011-0909?: Cross-site scripting (XSS) vulnerability in Vanilla Forums before 2.0.17.6 allows remote attackers to inject arbitrary web script or HTML via the p parameter to an unspecified component, a different vulnerability than CVE-2011-0526.
How severe is CVE-2011-0909?: CVE-2011-0909 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2011-0909 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-0909?: CVE-2011-0909 primarily affects Vanillaforums Vanilla. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-0909?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-0909 published?: CVE-2011-0909 was published on 2011-02-08 and last updated on 2026-06-16.

References

http://www.vanillaforums.org/discussion/comment/134729/#Comment_134729

Affected products (14)

cpe:2.3:a:vanillaforums:vanilla:*:*:*:*:*:*:*:*
cpe:2.3:a:vanillaforums:vanilla:2.0.9:*:*:*:*:*:*:*
cpe:2.3:a:vanillaforums:vanilla:2.0.10:*:*:*:*:*:*:*
cpe:2.3:a:vanillaforums:vanilla:2.0.11:*:*:*:*:*:*:*
cpe:2.3:a:vanillaforums:vanilla:2.0.12:*:*:*:*:*:*:*
cpe:2.3:a:vanillaforums:vanilla:2.0.13:*:*:*:*:*:*:*
cpe:2.3:a:vanillaforums:vanilla:2.0.14:*:*:*:*:*:*:*
cpe:2.3:a:vanillaforums:vanilla:2.0.15:*:*:*:*:*:*:*
cpe:2.3:a:vanillaforums:vanilla:2.0.16:*:*:*:*:*:*:*
cpe:2.3:a:vanillaforums:vanilla:2.0.17:*:*:*:*:*:*:*
cpe:2.3:a:vanillaforums:vanilla:2.0.17.1:*:*:*:*:*:*:*
cpe:2.3:a:vanillaforums:vanilla:2.0.17.2:*:*:*:*:*:*:*
cpe:2.3:a:vanillaforums:vanilla:2.0.17.3:*:*:*:*:*:*:*
cpe:2.3:a:vanillaforums:vanilla:2.0.17.4:*:*:*:*:*:*:*

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