CVE-2016-1564: n/a vulnerability

CVE-2016-1564: Multiple cross-site scripting (XSS) vulnerabilities in wp-includes/class-wp-theme.php in WordPress before 4...

Multiple cross-site scripting (XSS) vulnerabilities in wp-includes/class-wp-theme.php in WordPress before 4.4.1 allow remote attackers to inject arbitrary web script or HTML via a (1) stylesheet name or (2) template name to wp-admin/customize.php.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 5, 2024, 23:02 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2016-1564 is an older WordPress core cross-site scripting issue fixed in WordPress 4.4.1. If an organization still runs WordPress before 4.4.1, an attacker could inject script or HTML through theme stylesheet or template names shown in the Customizer area. Exposure is mainly legacy WordPress core installations older than 4.4.1, including downstream packaged WordPress deployments. Current, maintained WordPress installations should not be affected if they include the 4.4.1 fix or later security updates. Treat this as a legacy hygiene issue, not an emergency unless old WordPress remains online. Any internet-facing WordPress instance before 4.4.1 should be prioritized for update or removal because XSS can support account compromise and site trust damage. Mitigation focus: Upgrade WordPress core to 4.4.1 or a later supported release.; Apply distribution security updates, including Debian DSA-3444 where relevant.; Check vendor guidance for any platform-specific backported package status..

Prepared: Jun 13, 2026, 14:22 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: May 22, 2016, 01:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

5Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://codex.wordpress.org/Version_4.4.1CVE reference · x_refsource_CONFIRM
https://wpvulndb.com/vulnerabilities/8358CVE reference · x_refsource_MISC
https://wordpress.org/news/2016/01/wordpress-4-4-1-security-and-maintenance-release/CVE reference · x_refsource_CONFIRM
https://core.trac.wordpress.org/changeset/36185CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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