How severe is CVE-2011-5257?

CVE-2011-5257 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2011-5257 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-5257?

CVE-2011-5257 primarily affects Appthemes Classipress. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-5257?

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

When was CVE-2011-5257 published?

CVE-2011-5257 was published on 2013-02-12 and last updated on 2026-06-16.

CVE-2011-5257

CVE-2011-5257 is a medium-severity vulnerability in Appthemes Classipress 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: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Appthemes Classipress
Published: 2013-02-12
Last modified: 2026-06-16

Description

Multiple cross-site scripting (XSS) vulnerabilities in the Classipress theme before 3.1.5 for WordPress allow remote attackers to inject arbitrary web script or HTML via the (1) twitter_id parameter related to the Twitter widget and (2) facebook_id parameter related to the Facebook widget.

Frequently asked questions

What is CVE-2011-5257?: Multiple cross-site scripting (XSS) vulnerabilities in the Classipress theme before 3.1.5 for WordPress allow remote attackers to inject arbitrary web script or HTML via the (1) twitter_id parameter related to the Twitter widget and (2) facebook_id parameter related to the Facebook widget.
How severe is CVE-2011-5257?: CVE-2011-5257 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2011-5257 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-5257?: CVE-2011-5257 primarily affects Appthemes Classipress. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-5257?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-5257 published?: CVE-2011-5257 was published on 2013-02-12 and last updated on 2026-06-16.

References

Affected products (5)

cpe:2.3:a:appthemes:classipress:*:*:*:*:*:*:*:*
cpe:2.3:a:appthemes:classipress:3.0.5.2:*:*:*:*:*:*:*
cpe:2.3:a:appthemes:classipress:3.0.5.3:*:*:*:*:*:*:*
cpe:2.3:a:appthemes:classipress:3.1.3:*:*:*:*:*:*:*
cpe:2.3:a:appthemes:classipress:3.1.5:*:*:*:*:*:*:*

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