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CVE-2015-3440

MEDIUM severity · CVSS 4.3 · Cross-site scripting (XSS)
4.3CVSS MEDIUM

Summary

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.

Impact & exploitability

Attack vectorNetwork
Attack complexity
Privileges required
User interaction
Confidentiality impactNone
Integrity impact
Availability impactNone
Exploit probability (EPSS)14%

AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products we track (2)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Last checked: Wed, 10 Jun 2026 22:18:30 UTC