How severe is CVE-2013-5738?

CVE-2013-5738 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2013-5738 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-5738?

CVE-2013-5738 affects Wordpress. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2013-5738?

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

When was CVE-2013-5738 published?

CVE-2013-5738 was published on 2013-09-12 and last updated on 2026-06-16.

CVE-2013-5738

CVE-2013-5738 is a medium-severity vulnerability in Wordpress 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Wordpress
Published: 2013-09-12
Last modified: 2026-06-16

Description

The get_allowed_mime_types function in wp-includes/functions.php in WordPress before 3.6.1 does not require the unfiltered_html capability for uploads of .htm and .html files, which might make it easier for remote authenticated users to conduct cross-site scripting (XSS) attacks via a crafted file.

Frequently asked questions

What is CVE-2013-5738?: The get_allowed_mime_types function in wp-includes/functions.php in WordPress before 3.6.1 does not require the unfiltered_html capability for uploads of .htm and .html files, which might make it easier for remote authenticated users to conduct cross-site scripting (XSS) attacks via a crafted file.
How severe is CVE-2013-5738?: CVE-2013-5738 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2013-5738 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-5738?: CVE-2013-5738 affects Wordpress. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2013-5738?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-5738 published?: CVE-2013-5738 was published on 2013-09-12 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*

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