CVE-2015-3440: n/a vulnerability

CVE-2015-3440: Cross-site scripting (XSS) vulnerability in wp-includes/wp-db.php in WordPress before 4.2.1 allows remote a...

Cross-site scripting (XSS) vulnerability in wp-includes/wp-db.php in WordPress before 4.2.1 allows remote attackers to inject arbitrary web script or HTML via a long comment that is improperly stored because of limitations on the MySQL TEXT data type.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 05:47 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2015-3440 is a stored XSS issue in WordPress before 4.2.1. A remote attacker could submit an overly long comment that WordPress stored incorrectly, causing script or HTML to run later when viewed. Business risk is highest for legacy WordPress sites with comments enabled and privileged users reviewing comments. Exposure is likely limited to WordPress installations older than 4.2.1, especially public sites accepting comments. Modern maintained WordPress deployments should not be affected if updated beyond the 2015 security release. Prioritize remediation for internet-facing legacy WordPress sites. The issue is old but public, affects a widely deployed CMS, and can put administrative browser sessions at risk if vulnerable comments are viewed. Mitigation focus: Upgrade WordPress to 4.2.1 or later using vendor-supported update channels.; Check distributor advisories if WordPress came from Debian, Fedora, or another package manager.; Restrict or moderate public comments on legacy sites until updated..

Prepared: Jun 13, 2026, 22:22 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: Aug 3, 2015, 14:00 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

6Source 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
36844CVE reference · exploit, x_refsource_EXPLOIT-DB
https://klikki.fi/adv/wordpress2.htmlCVE reference · x_refsource_MISC
https://wpvulndb.com/vulnerabilities/7945CVE reference · x_refsource_MISC
https://wordpress.org/news/2015/04/wordpress-4-2-1/CVE reference · x_refsource_CONFIRM
https://core.trac.wordpress.org/changeset/32299CVE 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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