Is CVE-2015-3438 in the CISA KEV catalog?

No. CVE-2015-3438 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2015-3438?

CVE-2015-3438 has a CVSS v2 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2015-3438?

CVE-2015-3438 has an EPSS score of 8.47% (94th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2015-3438?

Upgrade wordpress on debian 11 to 4.2+dfsg-1 or later.

CVE & CISA-KEV Catalog

CVE-2015-3438

MEDIUMEPSS 94th pctl

4.3

CVSS v2

NVD

Description

Multiple cross-site scripting (XSS) vulnerabilities in WordPress before 4.1.2, when MySQL is used without strict mode, allow remote attackers to inject arbitrary web script or HTML via a (1) four-byte UTF-8 character or (2) invalid character that reaches the database layer, as demonstrated by a crafted character in a comment.

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

wordpressDebian

Fixed in:4.2+dfsg-1CVE-2015-3438

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

8.47%probability of exploitation in 30 days

94thpercentile

High risk: more likely to be exploited than 94% of all known CVEs.

References

Patch2

Exploit1

cedricvb.be

Other references7

Related Vulnerabilities

Other CWE-79 (Cross-Site Scripting (XSS)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-11022	Medium	6.9	99%	-	Fix
CVE-2019-3929	Critical	9.8	99%	KEV	Fix
CVE-2020-9496	Medium	6.1	99%	-	-
CVE-2023-28341	Medium	6.1	99%	-	Fix
CVE-2018-12998	Medium	6.1	98%	-	-
CVE-2025-4123	High	7.6	98%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.