WordPress security changelog
CRITICAL CVE-2026-81756 Deferred

Smart Marketing permits unauthenticated SQL injection

Smart Marketing SMS and Newsletters Forms through 5.1.24 allows unauthenticated attacker-controlled input to reach an unsafe database query. Exploitation can expose database contents and disrupt database-backed site functionality.

CVE / CNA score 9.3 CVSS 3.1 · audit@patchstack.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
Smart Marketing SMS and Newsletters Forms
Plugin slug
smart-marketing-for-wp
Affected
n/a through 5.1.24
Safe version
5.1.25
Published
Aug 31, 2026
Weakness
CWE-89 — Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

This CVE was published Aug 31, 2026 and is one of 4 known issues for this plugin.

Update, patch or deactivate.

Update Smart Marketing SMS and Newsletters Forms to 5.1.25 or later, review request and database logs, and rotate secrets if database contents may have been exposed.

A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Technical description

Unauthenticated SQL Injection in Smart Marketing SMS and Newsletters Forms <= 5.1.24 versions.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L

Primary and upstream sources